diff --git a/AGENTS.md b/AGENTS.md
new file mode 100644
index 0000000..b277fe9
--- /dev/null
+++ b/AGENTS.md
@@ -0,0 +1,105 @@
+# AGENTS.md
+
+État des lieux opérationnel du projet SIRH (backend + frontend), à utiliser comme base sur les prochaines interventions.
+
+## 1) Stack et structure
+
+- Backend: Symfony + API Platform + Doctrine ORM
+- Frontend: Nuxt 4 + Vue 3 + TypeScript + Tailwind
+- Exécution locale: Docker via `makefile`
+
+Arborescence clé:
+- `src/`: domaine, API resources, state providers/processors, services
+- `tests/`: TU backend (PHPUnit)
+- `frontend/`: app Nuxt (pages, composants, composables, services)
+- `migrations/`: migrations Doctrine
+
+## 2) Commandes utiles
+
+- Démarrer stack: `make start`
+- Tests backend: `make test`
+- Build frontend: `cd frontend && npm run build`
+- Dev frontend: `make dev-nuxt`
+
+## 3) Domaine métier (résumé)
+
+### Contrats
+- Entité: `Contract`
+- Champs principaux: `name`, `trackingMode`, `weeklyHours`, `isActive`
+- `trackingMode`:
+  - `TIME`: suivi par heures
+  - `PRESENCE`: suivi présence demi-journées/journées
+- Enums backend:
+  - `App\Enum\TrackingMode`
+  - `App\Enum\ContractType` (`FORFAIT`, `35H`, `39H`, `INTERIM`, `CUSTOM`)
+- `Contract::getType()` est exposé en API (`contract:read`, `employee:read`)
+
+### Heures / absences
+- Les absences sont découpées en enregistrements journaliers (pas de période unique stockée).
+- Une ligne d’heures validée est verrouillée côté métier.
+- Règles de crédit absence (`countAsWorkedHours=true`) gérées dans `WorkedHoursCreditPolicy`:
+  - contrats présence: crédit en unités de présence
+  - contrats temps: crédit en minutes selon règles contrat (35h, 39h, 4h, fallback)
+
+## 4) Écrans principaux
+
+### Page Heures (`frontend/pages/hours.vue`)
+- Vue Jour + Vue Semaine (semaine réservée admin)
+- Toolbar dédiée: `frontend/components/hours/HoursToolbar.vue`
+- Vue jour: `frontend/components/hours/HoursDayView.vue`
+- Vue semaine: `frontend/components/hours/HoursWeekView.vue`
+- Logique page: `frontend/composables/useHoursPage.ts`
+
+### Points UX déjà en place
+- Toolbar semaine: raccourcis semaine précédente / actuelle / suivante
+- Légende absences affichée dans la toolbar (admin + vue semaine)
+- Cellules semaine avec absence: couleur du type d’absence (plus rouge fixe)
+- Pour user non-admin: restrictions d’édition selon validations/absences
+
+## 5) API / calculs hebdo
+
+- Provider: `src/State/WorkHourWeeklySummaryProvider.php`
+- DTOs:
+  - `src/Dto/WorkHours/WeeklySummaryRow.php`
+  - `src/Dto/WorkHours/WeeklyDaySummary.php`
+- Le résumé hebdo renvoie notamment:
+  - `trackingMode`
+  - `contractName`
+  - `contractType`
+  - détails journaliers (jour/nuit/total, présence, absence label/couleur)
+
+### Heures supp
+- Règles métier:
+  - contrats <= 35h: tranche 25% de 35h à 43h, puis 50% au-delà
+  - contrats >= 39h: tranche 25% de 39h à 43h, puis 50% au-delà
+  - contrats `INTERIM`: pas de bonus 25/50 ni récup
+
+## 6) Conventions techniques
+
+- Favoriser DTO explicites plutôt que tableaux associatifs bruts.
+- Utiliser les interfaces repository dans providers/processors testés.
+- Centraliser les règles métier dans services/providers backend plutôt que dupliquer côté front.
+- Front: éviter les calculs métier lourds; consommer les champs API déjà calculés.
+
+## 7) Tests et qualité
+
+- Les TU backend passent actuellement via `make test`.
+- Le build frontend passe via `npm run build`.
+- À chaque évolution métier:
+  - mettre à jour les tests provider/processor/service impactés
+  - maintenir la cohérence des DTO TypeScript (`frontend/services/dto/*`)
+
+## 8) Fichiers sensibles (à lire avant modif)
+
+- `src/State/WorkHourWeeklySummaryProvider.php`
+- `src/Service/WorkHours/WorkedHoursCreditPolicy.php`
+- `src/State/AbsenceWriteProcessor.php`
+- `src/State/WorkHourBulkUpsertProcessor.php`
+- `frontend/composables/useHoursPage.ts`
+- `frontend/components/hours/HoursWeekView.vue`
+
+## 9) Décisions de conception actuelles
+
+- Les absences sont stockées par jour (facilite verrouillage/édition fine).
+- Les règles de calcul (crédits, majorations, récup) sont portées côté backend.
+- Le front reste centré sur l’affichage/interaction et réutilise les données enrichies de l’API.
diff --git a/frontend/components/hours/HoursToolbar.vue b/frontend/components/hours/HoursToolbar.vue
index 7ea8af2..991ccfa 100644
--- a/frontend/components/hours/HoursToolbar.vue
+++ b/frontend/components/hours/HoursToolbar.vue
@@ -126,11 +126,23 @@
     <div v-if="isAdmin" class="w-80 max-w-full">
       <EmployeeNameFilterInput v-model="employeeFilter" />
     </div>
+
+    <div
+      v-if="isAdmin && viewMode === 'week' && absenceTypes.length > 0"
+      class="flex flex-wrap items-center gap-6"
+    >
+      <p class="font-bold">Légende :</p>
+      <div v-for="type in absenceTypes" :key="type.id" class="flex items-center gap-2">
+        <div :style="{ backgroundColor: type.color }" class="h-4 w-4 rounded"></div>
+        <p>{{ type.label }}</p>
+      </div>
+    </div>
   </div>
 </template>
 
 <script setup lang="ts">
 import type { Site } from '~/services/dto/site'
+import type { AbsenceType } from '~/services/dto/absence-type'
 import EmployeeNameFilterInput from '~/components/EmployeeNameFilterInput.vue'
 import SiteFilterSelector from '~/components/SiteFilterSelector.vue'
 import { weekInputValueToYmd, ymdToWeekInputValue } from '~/utils/date'
@@ -143,6 +155,7 @@ const employeeFilter = defineModel<string>('employeeFilter', { required: true })
 defineProps<{
   isAdmin: boolean
   sites: Site[]
+  absenceTypes: AbsenceType[]
   formattedSelectedDate: string
   shortcutButtonClass: (target: 'yesterday' | 'today' | 'tomorrow') => string
   weekShortcutButtonClass: (target: 'previousWeek' | 'thisWeek' | 'nextWeek') => string
diff --git a/frontend/components/hours/HoursWeekView.vue b/frontend/components/hours/HoursWeekView.vue
index 69a4e9b..b570947 100644
--- a/frontend/components/hours/HoursWeekView.vue
+++ b/frontend/components/hours/HoursWeekView.vue
@@ -30,7 +30,14 @@
           <p class="text-[11px] text-neutral-500 truncate">{{ row.siteName ?? 'Sans site' }}</p>
         </div>
 
-        <div v-for="daily in row.daily" :key="daily.date" class="text-left leading-4">
+        <div
+          v-for="daily in row.daily"
+          :key="daily.date"
+          class="text-left leading-4 rounded-md px-2 py-1"
+          :class="daily.hasAbsence ? 'text-white' : ''"
+          :style="getDailyCellStyle(daily)"
+          :title="daily.absenceLabel ?? ''"
+        >
           <template v-if="row.trackingMode === 'PRESENCE'">{{ daily.present ?? 0 }}</template>
           <template v-else>
             <div>J {{ formatMinutes(daily.dayMinutes) }}</div>
@@ -52,13 +59,13 @@
           {{ row.trackingMode === 'PRESENCE' ? '-' : formatMinutes(row.weeklyOvertimeTotalMinutes ?? 0) }}
         </div>
         <div class="font-semibold">
-          {{ row.trackingMode === 'PRESENCE' ? '-' : formatMinutes(row.weeklyOvertime25Minutes ?? 0) }}
+          {{ row.trackingMode === 'PRESENCE' || isInterimContract(row.contractType) ? '-' : formatMinutes(row.weeklyOvertime25Minutes ?? 0) }}
         </div>
         <div class="font-semibold">
-          {{ row.trackingMode === 'PRESENCE' ? '-' : formatMinutes(row.weeklyOvertime50Minutes ?? 0) }}
+          {{ row.trackingMode === 'PRESENCE' || isInterimContract(row.contractType) ? '-' : formatMinutes(row.weeklyOvertime50Minutes ?? 0) }}
         </div>
         <div class="font-semibold">
-          {{ row.trackingMode === 'PRESENCE' ? '-' : formatMinutes(row.weeklyRecoveryMinutes ?? 0) }}
+          {{ row.trackingMode === 'PRESENCE' || isInterimContract(row.contractType) ? '-' : formatMinutes(row.weeklyRecoveryMinutes ?? 0) }}
         </div>
       </div>
     </div>
@@ -67,6 +74,19 @@
 
 <script setup lang="ts">
 import type { WeeklyWorkHourSummary } from '~/services/dto/work-hour'
+import { CONTRACT_TYPES, type ContractType } from '~/services/dto/contract'
+
+const isInterimContract = (contractType?: ContractType | null) => {
+  return contractType === CONTRACT_TYPES.INTERIM
+}
+
+const getDailyCellStyle = (daily: {
+  hasAbsence?: boolean
+  absenceColor?: string | null
+}) => {
+  if (!daily.hasAbsence) return undefined
+  return { backgroundColor: daily.absenceColor || '#dc2626' }
+}
 
 defineProps<{
   isWeekLoading: boolean
diff --git a/frontend/composables/useHoursPage.ts b/frontend/composables/useHoursPage.ts
index 235a24e..587f7bc 100644
--- a/frontend/composables/useHoursPage.ts
+++ b/frontend/composables/useHoursPage.ts
@@ -5,6 +5,7 @@ import type { WorkHour, WorkHourDayContext, WeeklyWorkHourSummary } from '~/serv
 import type { AbsenceType } from '~/services/dto/absence-type'
 import type { Absence } from '~/services/dto/absence'
 import type { HalfDay } from '~/services/dto/half-day'
+import { CONTRACT_TYPES, TRACKING_MODES } from '~/services/dto/contract'
 import type { HourRow } from '~/components/hours/types'
 import { listScopedEmployees } from '~/services/employees'
 import { listAbsenceTypes } from '~/services/absence-types'
@@ -275,14 +276,17 @@ export const useHoursPage = () => {
     isValid: false
   })
 
-  const isPresenceTracking = (employee: Employee) => employee.contract?.trackingMode === 'PRESENCE'
+  const isPresenceTracking = (employee: Employee) => employee.contract?.trackingMode === TRACKING_MODES.PRESENCE
   const isTimeTracking = (employee: Employee) => !isPresenceTracking(employee)
   const isRowLocked = (employeeId: number) => rows.value[employeeId]?.isValid ?? false
 
   const contractLabel = (employee: Employee) => {
     const contract = employee.contract
     if (!contract) return '-'
-    if (contract.weeklyHours !== null && contract.weeklyHours !== undefined && contract.trackingMode === 'TIME') {
+    if (contract.type === CONTRACT_TYPES.INTERIM) {
+      return contract.name
+    }
+    if (contract.weeklyHours !== null && contract.weeklyHours !== undefined && contract.trackingMode === TRACKING_MODES.TIME) {
       return `${contract.weeklyHours}h`
     }
     return contract.name
@@ -392,7 +396,7 @@ export const useHoursPage = () => {
   const isEveningLockedByAbsence = (employeeId: number) => {
     const dayRow = dayContextByEmployeeId.value.get(employeeId)
     if (!dayRow) return false
-    return dayRow.absentMorning && dayRow.absentAfternoon
+    return dayRow.absentAfternoon
   }
 
   const formatMinutes = (minutes: number) => {
@@ -475,6 +479,42 @@ export const useHoursPage = () => {
     isAbsenceDrawerOpen.value = true
   }
 
+  const applyLocalClearFromAbsence = (employeeId: number, startHalf: HalfDay, endHalf: HalfDay) => {
+    const row = rows.value[employeeId]
+    if (!row) return
+
+    if (startHalf === 'AM' && endHalf === 'AM') {
+      row.morningFrom = ''
+      row.morningTo = ''
+      return
+    }
+
+    if (startHalf === 'PM' && endHalf === 'PM') {
+      row.afternoonFrom = ''
+      row.afternoonTo = ''
+      row.eveningFrom = ''
+      row.eveningTo = ''
+      return
+    }
+
+    row.morningFrom = ''
+    row.morningTo = ''
+    row.afternoonFrom = ''
+    row.afternoonTo = ''
+    row.eveningFrom = ''
+    row.eveningTo = ''
+  }
+
+  const refreshAfterAbsenceChange = async () => {
+    if (isAdmin.value) {
+      await Promise.all([loadWeeklySummary(), loadDayContext(), loadAbsences()])
+      return
+    }
+
+    weeklySummary.value = null
+    await Promise.all([loadDayContext(), loadAbsences()])
+  }
+
   const submitAbsence = async () => {
     const form = absenceForm.value
     if (isAbsenceSubmitting.value || form.employeeId === '' || form.typeId === '') return
@@ -504,9 +544,9 @@ export const useHoursPage = () => {
         })
       }
 
+      applyLocalClearFromAbsence(Number(form.employeeId), form.startHalf, form.endHalf)
       closeAbsenceDrawer()
-      await refreshByDate()
-      await loadAbsences()
+      await refreshAfterAbsenceChange()
     } finally {
       isAbsenceSubmitting.value = false
     }
@@ -519,8 +559,7 @@ export const useHoursPage = () => {
     try {
       await deleteAbsence(editingAbsence.value.id)
       closeAbsenceDrawer()
-      await refreshByDate()
-      await loadAbsences()
+      await refreshAfterAbsenceChange()
     } finally {
       isAbsenceSubmitting.value = false
     }
diff --git a/frontend/layouts/default.vue b/frontend/layouts/default.vue
index 0f33597..ead9d69 100644
--- a/frontend/layouts/default.vue
+++ b/frontend/layouts/default.vue
@@ -6,17 +6,10 @@
                     <img src="/malio.png" alt="Logo" class="w-auto"/>
                 </div>
                 <nav class="flex-1 px-4 pb-6">
-                    <NuxtLink
-                        to="/hours"
-                        class="flex items-center gap-3 px-4 pb-3 pt-6 text-md font-semibold text-neutral-700 hover:bg-tertiary-500 hover:text-primary-500 border-t border-secondary-500"
-                        active-class="bg-tertiary-500 text-primary-500"
-                    >
-                        Heures
-                    </NuxtLink>
                     <template v-if="isAdmin">
                         <NuxtLink
                             to="/"
-                            class="flex items-center gap-3 px-4 py-3 text-md font-semibold text-neutral-700 hover:bg-tertiary-500 hover:text-primary-500"
+                            class="flex items-center gap-3 px-4 pb-3 pt-6 text-md font-semibold text-neutral-700 hover:bg-tertiary-500 hover:text-primary-500 border-t border-secondary-500"
                             active-class="bg-tertiary-500 text-primary-500"
                         >
                             Tableau de bord
@@ -28,6 +21,15 @@
                         >
                             Calendrier
                         </NuxtLink>
+                    </template>
+                    <NuxtLink
+                        to="/hours"
+                        class="flex items-center gap-3 px-4 py-3 text-md font-semibold text-neutral-700 hover:bg-tertiary-500 hover:text-primary-500"
+                        active-class="bg-tertiary-500 text-primary-500"
+                    >
+                        Heures
+                    </NuxtLink>
+                    <template v-if="isAdmin">
                         <NuxtLink
                             to="/employees"
                             class="flex items-center gap-3 px-4 py-3 text-md font-semibold text-neutral-700 hover:bg-tertiary-500 hover:text-primary-500"
diff --git a/frontend/pages/hours.vue b/frontend/pages/hours.vue
index 40e61ce..63c8e4c 100644
--- a/frontend/pages/hours.vue
+++ b/frontend/pages/hours.vue
@@ -11,6 +11,7 @@
             v-model:employee-filter="employeeFilter"
             :is-admin="isAdmin"
             :sites="sites"
+            :absence-types="absenceTypes"
             :formatted-selected-date="formattedSelectedDate"
             :shortcut-button-class="shortcutButtonClass"
             :week-shortcut-button-class="weekShortcutButtonClass"
diff --git a/frontend/services/dto/contract.ts b/frontend/services/dto/contract.ts
index b69ada3..97b6106 100644
--- a/frontend/services/dto/contract.ts
+++ b/frontend/services/dto/contract.ts
@@ -1,7 +1,25 @@
+export const TRACKING_MODES = {
+  TIME: 'TIME',
+  PRESENCE: 'PRESENCE'
+} as const
+
+export type TrackingMode = (typeof TRACKING_MODES)[keyof typeof TRACKING_MODES]
+
+export const CONTRACT_TYPES = {
+  FORFAIT: 'FORFAIT',
+  H35: '35H',
+  H39: '39H',
+  INTERIM: 'INTERIM',
+  CUSTOM: 'CUSTOM'
+} as const
+
+export type ContractType = (typeof CONTRACT_TYPES)[keyof typeof CONTRACT_TYPES]
+
 export type Contract = {
   id: number
   name: string
-  trackingMode: 'TIME' | 'PRESENCE'
+  trackingMode: TrackingMode
+  type: ContractType
   weeklyHours?: number | null
   isActive?: boolean
 }
diff --git a/frontend/services/dto/work-hour.ts b/frontend/services/dto/work-hour.ts
index c7e19b0..21eeeb1 100644
--- a/frontend/services/dto/work-hour.ts
+++ b/frontend/services/dto/work-hour.ts
@@ -1,4 +1,5 @@
 import type { Employee } from './employee'
+import type { ContractType, TrackingMode } from './contract'
 
 export type WorkHour = {
   id: number
@@ -33,6 +34,9 @@ export type WeeklyWorkHourDailySummary = {
   nightMinutes: number
   totalMinutes: number
   present?: number | null
+  hasAbsence?: boolean
+  absenceLabel?: string | null
+  absenceColor?: string | null
 }
 
 export type WeeklyWorkHourRowSummary = {
@@ -41,7 +45,8 @@ export type WeeklyWorkHourRowSummary = {
   lastName: string
   siteName?: string | null
   contractName?: string | null
-  trackingMode?: 'TIME' | 'PRESENCE' | null
+  contractType?: ContractType | null
+  trackingMode?: TrackingMode | null
   daily: WeeklyWorkHourDailySummary[]
   weeklyDayMinutes: number
   weeklyNightMinutes: number
diff --git a/src/ApiResource/WorkHourWeeklySummary.php b/src/ApiResource/WorkHourWeeklySummary.php
index 40b5444..6dea984 100644
--- a/src/ApiResource/WorkHourWeeklySummary.php
+++ b/src/ApiResource/WorkHourWeeklySummary.php
@@ -6,6 +6,7 @@ namespace App\ApiResource;
 
 use ApiPlatform\Metadata\ApiResource;
 use ApiPlatform\Metadata\Get;
+use App\Dto\WorkHours\WeeklySummaryRow;
 use App\State\WorkHourWeeklySummaryProvider;
 
 #[ApiResource(
@@ -26,30 +27,6 @@ final class WorkHourWeeklySummary
     /** @var list<string> */
     public array $days = [];
 
-    /**
-     * @var list<array{
-     *     employeeId:int,
-     *     firstName:string,
-     *     lastName:string,
-     *     siteName:?string,
-     *     contractName:?string,
-     *     trackingMode:?string,
-     *     daily:list<array{
-     *         date:string,
-     *         dayMinutes:int,
-     *         nightMinutes:int,
-     *         totalMinutes:int,
-     *         present:?float
-     *     }>,
-     *     weeklyDayMinutes:int,
-     *     weeklyNightMinutes:int,
-     *     weeklyTotalMinutes:int,
-     *     weeklyPresenceCount:float,
-     *     weeklyOvertimeTotalMinutes:int,
-     *     weeklyOvertime25Minutes:int,
-     *     weeklyOvertime50Minutes:int,
-     *     weeklyRecoveryMinutes:int
-     * }>
-     */
+    /** @var list<WeeklySummaryRow> */
     public array $rows = [];
 }
diff --git a/src/Dto/WorkHours/WeeklyDaySummary.php b/src/Dto/WorkHours/WeeklyDaySummary.php
new file mode 100644
index 0000000..97fcf89
--- /dev/null
+++ b/src/Dto/WorkHours/WeeklyDaySummary.php
@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Dto\WorkHours;
+
+final class WeeklyDaySummary
+{
+    public function __construct(
+        public string $date,
+        public int $dayMinutes,
+        public int $nightMinutes,
+        public int $totalMinutes,
+        public ?float $present = null,
+        public bool $hasAbsence = false,
+        public ?string $absenceLabel = null,
+        public ?string $absenceColor = null,
+    ) {}
+}
diff --git a/src/Dto/WorkHours/WeeklySummaryRow.php b/src/Dto/WorkHours/WeeklySummaryRow.php
new file mode 100644
index 0000000..0f5fdba
--- /dev/null
+++ b/src/Dto/WorkHours/WeeklySummaryRow.php
@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Dto\WorkHours;
+
+final class WeeklySummaryRow
+{
+    /**
+     * @param list<WeeklyDaySummary> $daily
+     */
+    public function __construct(
+        public int $employeeId,
+        public string $firstName,
+        public string $lastName,
+        public ?string $siteName,
+        public ?string $contractName,
+        public ?string $contractType,
+        public ?string $trackingMode,
+        public array $daily,
+        public int $weeklyDayMinutes,
+        public int $weeklyNightMinutes,
+        public int $weeklyTotalMinutes,
+        public float $weeklyPresenceCount,
+        public int $weeklyOvertimeTotalMinutes,
+        public int $weeklyOvertime25Minutes,
+        public int $weeklyOvertime50Minutes,
+        public int $weeklyRecoveryMinutes,
+    ) {}
+}
diff --git a/src/Entity/Contract.php b/src/Entity/Contract.php
index 97f93d0..424d86e 100644
--- a/src/Entity/Contract.php
+++ b/src/Entity/Contract.php
@@ -5,7 +5,10 @@ declare(strict_types=1);
 namespace App\Entity;
 
 use ApiPlatform\Metadata\ApiResource;
+use App\Enum\ContractType;
+use App\Enum\TrackingMode;
 use Doctrine\ORM\Mapping as ORM;
+use InvalidArgumentException;
 use Symfony\Component\Serializer\Attribute\Groups;
 
 #[ApiResource(
@@ -18,8 +21,8 @@ use Symfony\Component\Serializer\Attribute\Groups;
 #[ORM\Table(name: 'contracts')]
 class Contract
 {
-    public const string TRACKING_TIME     = 'TIME';
-    public const string TRACKING_PRESENCE = 'PRESENCE';
+    public const string TRACKING_TIME     = TrackingMode::TIME->value;
+    public const string TRACKING_PRESENCE = TrackingMode::PRESENCE->value;
 
     #[ORM\Id]
     #[ORM\GeneratedValue]
@@ -65,13 +68,29 @@ class Contract
         return $this->trackingMode;
     }
 
-    public function setTrackingMode(string $trackingMode): self
+    public function getTrackingModeEnum(): TrackingMode
     {
-        $this->trackingMode = $trackingMode;
+        return TrackingMode::tryFrom($this->trackingMode) ?? TrackingMode::TIME;
+    }
+
+    public function setTrackingMode(string|TrackingMode $trackingMode): self
+    {
+        $value = $trackingMode instanceof TrackingMode ? $trackingMode->value : $trackingMode;
+        if (null === TrackingMode::tryFrom($value)) {
+            throw new InvalidArgumentException(sprintf('Invalid tracking mode "%s".', $value));
+        }
+
+        $this->trackingMode = $value;
 
         return $this;
     }
 
+    #[Groups(['contract:read', 'employee:read'])]
+    public function getType(): ContractType
+    {
+        return ContractType::resolve($this->name, $this->trackingMode, $this->weeklyHours);
+    }
+
     public function getWeeklyHours(): ?int
     {
         return $this->weeklyHours;
diff --git a/src/Enum/ContractType.php b/src/Enum/ContractType.php
new file mode 100644
index 0000000..9d2e5f8
--- /dev/null
+++ b/src/Enum/ContractType.php
@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Enum;
+
+enum ContractType: string
+{
+    case FORFAIT = 'FORFAIT';
+    case H35     = '35H';
+    case H39     = '39H';
+    case INTERIM = 'INTERIM';
+    case CUSTOM  = 'CUSTOM';
+
+    public static function resolve(?string $name, ?string $trackingMode, ?int $weeklyHours): self
+    {
+        if (TrackingMode::PRESENCE->value === $trackingMode) {
+            return self::FORFAIT;
+        }
+
+        $normalizedName = self::normalize($name);
+        if ('interim' === $normalizedName) {
+            return self::INTERIM;
+        }
+
+        if (35 === $weeklyHours) {
+            return self::H35;
+        }
+
+        if (39 === $weeklyHours) {
+            return self::H39;
+        }
+
+        return self::CUSTOM;
+    }
+
+    private static function normalize(?string $value): string
+    {
+        if (null === $value) {
+            return '';
+        }
+
+        $normalized = mb_strtolower(trim($value));
+
+        return str_replace('é', 'e', $normalized);
+    }
+}
diff --git a/src/Enum/TrackingMode.php b/src/Enum/TrackingMode.php
new file mode 100644
index 0000000..0493b89
--- /dev/null
+++ b/src/Enum/TrackingMode.php
@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Enum;
+
+enum TrackingMode: string
+{
+    case TIME     = 'TIME';
+    case PRESENCE = 'PRESENCE';
+}
diff --git a/src/Repository/Contract/WorkHourReadRepositoryInterface.php b/src/Repository/Contract/WorkHourReadRepositoryInterface.php
index bec3c12..ed3112a 100644
--- a/src/Repository/Contract/WorkHourReadRepositoryInterface.php
+++ b/src/Repository/Contract/WorkHourReadRepositoryInterface.php
@@ -18,5 +18,7 @@ interface WorkHourReadRepositoryInterface
      */
     public function findByDateRangeAndEmployees(DateTimeImmutable $from, DateTimeImmutable $to, array $employees): array;
 
+    public function findOneByEmployeeAndDate(Employee $employee, DateTimeInterface $date): ?WorkHour;
+
     public function hasValidatedInRange(Employee $employee, DateTimeInterface $from, DateTimeInterface $to): bool;
 }
diff --git a/src/Repository/WorkHourRepository.php b/src/Repository/WorkHourRepository.php
index daed9bd..116210d 100644
--- a/src/Repository/WorkHourRepository.php
+++ b/src/Repository/WorkHourRepository.php
@@ -101,4 +101,20 @@ final class WorkHourRepository extends ServiceEntityRepository implements WorkHo
 
         return ((int) $qb->getQuery()->getSingleScalarResult()) > 0;
     }
+
+    public function findOneByEmployeeAndDate(Employee $employee, DateTimeInterface $date): ?WorkHour
+    {
+        $workDate = DateTimeImmutable::createFromInterface($date);
+
+        $qb = $this->createQueryBuilder('w')
+            ->andWhere('w.employee = :employee')
+            ->andWhere('w.workDate = :workDate')
+            ->setParameter('employee', $employee)
+            ->setParameter('workDate', $workDate)
+            ->setMaxResults(1)
+        ;
+
+        /** @var null|WorkHour $workHour */
+        return $qb->getQuery()->getOneOrNullResult();
+    }
 }
diff --git a/src/Service/WorkHours/WorkedHoursCreditPolicy.php b/src/Service/WorkHours/WorkedHoursCreditPolicy.php
index 384d6f6..7688494 100644
--- a/src/Service/WorkHours/WorkedHoursCreditPolicy.php
+++ b/src/Service/WorkHours/WorkedHoursCreditPolicy.php
@@ -5,7 +5,7 @@ declare(strict_types=1);
 namespace App\Service\WorkHours;
 
 use App\Entity\Absence;
-use App\Entity\Contract;
+use App\Enum\TrackingMode;
 use DateMalformedStringException;
 use DateTimeImmutable;
 
@@ -24,7 +24,7 @@ final class WorkedHoursCreditPolicy
 
         $employee = $absence->getEmployee();
         // Les contrats suivis en "présence" ne cumulent pas d'heures en minutes.
-        if (Contract::TRACKING_TIME !== $employee?->getContract()?->getTrackingMode()) {
+        if (TrackingMode::TIME->value !== $employee?->getContract()?->getTrackingMode()) {
             return 0;
         }
 
@@ -49,7 +49,7 @@ final class WorkedHoursCreditPolicy
         }
 
         $employee = $absence->getEmployee();
-        if (Contract::TRACKING_PRESENCE !== $employee?->getContract()?->getTrackingMode()) {
+        if (TrackingMode::PRESENCE->value !== $employee?->getContract()?->getTrackingMode()) {
             return 0.0;
         }
 
diff --git a/src/State/AbsenceWriteProcessor.php b/src/State/AbsenceWriteProcessor.php
index 2812d04..79df6bb 100644
--- a/src/State/AbsenceWriteProcessor.php
+++ b/src/State/AbsenceWriteProcessor.php
@@ -8,6 +8,7 @@ use ApiPlatform\Metadata\DeleteOperationInterface;
 use ApiPlatform\Metadata\Operation;
 use ApiPlatform\State\ProcessorInterface;
 use App\Entity\Absence;
+use App\Entity\Employee;
 use App\Enum\HalfDay;
 use App\Repository\Contract\AbsenceReadRepositoryInterface;
 use App\Repository\Contract\WorkHourReadRepositoryInterface;
@@ -81,6 +82,7 @@ final readonly class AbsenceWriteProcessor implements ProcessorInterface
             ->setStartHalf($first['startHalf'])
             ->setEndHalf($first['endHalf'])
         ;
+        $this->clearWorkHoursForSegment($employee, $first);
         $this->entityManager->persist($data);
 
         foreach ($segments as $segment) {
@@ -94,6 +96,7 @@ final readonly class AbsenceWriteProcessor implements ProcessorInterface
                 ->setEndHalf($segment['endHalf'])
             ;
 
+            $this->clearWorkHoursForSegment($employee, $segment);
             $this->entityManager->persist($absence);
         }
 
@@ -174,4 +177,47 @@ final readonly class AbsenceWriteProcessor implements ProcessorInterface
     {
         return DateTime::createFromImmutable($date);
     }
+
+    /**
+     * @param array{date: DateTimeImmutable, startHalf: HalfDay, endHalf: HalfDay} $segment
+     */
+    private function clearWorkHoursForSegment(Employee $employee, array $segment): void
+    {
+        $workHour = $this->workHourRepository->findOneByEmployeeAndDate($employee, $segment['date']);
+        if (null === $workHour) {
+            return;
+        }
+
+        // Demi-journée matin: on efface uniquement la plage du matin.
+        if (HalfDay::AM === $segment['startHalf'] && HalfDay::AM === $segment['endHalf']) {
+            $workHour
+                ->setMorningFrom(null)
+                ->setMorningTo(null)
+            ;
+
+            return;
+        }
+
+        // Demi-journée après-midi: on efface après-midi + soirée.
+        if (HalfDay::PM === $segment['startHalf'] && HalfDay::PM === $segment['endHalf']) {
+            $workHour
+                ->setAfternoonFrom(null)
+                ->setAfternoonTo(null)
+                ->setEveningFrom(null)
+                ->setEveningTo(null)
+            ;
+
+            return;
+        }
+
+        // Journée complète: on efface toutes les plages horaires.
+        $workHour
+            ->setMorningFrom(null)
+            ->setMorningTo(null)
+            ->setAfternoonFrom(null)
+            ->setAfternoonTo(null)
+            ->setEveningFrom(null)
+            ->setEveningTo(null)
+        ;
+    }
 }
diff --git a/src/State/WorkHourBulkUpsertProcessor.php b/src/State/WorkHourBulkUpsertProcessor.php
index 4646eb6..e919ea2 100644
--- a/src/State/WorkHourBulkUpsertProcessor.php
+++ b/src/State/WorkHourBulkUpsertProcessor.php
@@ -8,9 +8,9 @@ use ApiPlatform\Metadata\Operation;
 use ApiPlatform\State\ProcessorInterface;
 use App\ApiResource\WorkHourBulkUpsert;
 use App\ApiResource\WorkHourBulkUpsertResult;
-use App\Entity\Contract;
 use App\Entity\User;
 use App\Entity\WorkHour;
+use App\Enum\TrackingMode;
 use App\Repository\EmployeeRepository;
 use App\Repository\WorkHourRepository;
 use DateTimeImmutable;
@@ -75,7 +75,7 @@ final readonly class WorkHourBulkUpsertProcessor implements ProcessorInterface
                 throw new AccessDeniedHttpException(sprintf('Employee %d is outside your scope.', $employeeId));
             }
 
-            $isPresenceTracking = Contract::TRACKING_PRESENCE === $employee->getContract()?->getTrackingMode();
+            $isPresenceTracking = TrackingMode::PRESENCE->value === $employee->getContract()?->getTrackingMode();
             $normalized         = $this->normalizeEntry($entry, $employeeId, $isPresenceTracking);
             $existing           = $existingByEmployeeId[$employeeId] ?? null;
 
diff --git a/src/State/WorkHourWeeklySummaryProvider.php b/src/State/WorkHourWeeklySummaryProvider.php
index e20d622..dd63345 100644
--- a/src/State/WorkHourWeeklySummaryProvider.php
+++ b/src/State/WorkHourWeeklySummaryProvider.php
@@ -7,11 +7,15 @@ namespace App\State;
 use ApiPlatform\Metadata\Operation;
 use ApiPlatform\State\ProviderInterface;
 use App\ApiResource\WorkHourWeeklySummary;
+use App\Dto\WorkHours\WeeklyDaySummary;
+use App\Dto\WorkHours\WeeklySummaryRow;
 use App\Dto\WorkHours\WorkMetrics;
 use App\Entity\Absence;
 use App\Entity\Employee;
 use App\Entity\User;
 use App\Entity\WorkHour;
+use App\Enum\ContractType;
+use App\Enum\TrackingMode;
 use App\Repository\Contract\AbsenceReadRepositoryInterface;
 use App\Repository\Contract\EmployeeScopedRepositoryInterface;
 use App\Repository\Contract\WorkHourReadRepositoryInterface;
@@ -102,23 +106,7 @@ final readonly class WorkHourWeeklySummaryProvider implements ProviderInterface
      * @param list<Absence>  $absences
      * @param list<string>   $days
      *
-     * @return list<array{
-     *     employeeId:int,
-     *     firstName:string,
-     *     lastName:string,
-     *     siteName:?string,
-     *     contractName:?string,
-     *     trackingMode:?string,
-     *     daily:list<array{date:string, dayMinutes:int, nightMinutes:int, totalMinutes:int, present:?float}>,
-     *     weeklyDayMinutes:int,
-     *     weeklyNightMinutes:int,
-     *     weeklyTotalMinutes:int,
-     *     weeklyPresenceCount:float,
-     *     weeklyOvertimeTotalMinutes:int,
-     *     weeklyOvertime25Minutes:int,
-     *     weeklyOvertime50Minutes:int,
-     *     weeklyRecoveryMinutes:int
-     * }>
+     * @return list<WeeklySummaryRow>
      */
     private function buildRows(array $employees, array $workHours, array $absences, array $days): array
     {
@@ -140,6 +128,9 @@ final readonly class WorkHourWeeklySummaryProvider implements ProviderInterface
 
         $creditedByEmployeeDate         = [];
         $creditedPresenceByEmployeeDate = [];
+        $absenceByEmployeeDate          = [];
+        $absenceLabelByEmployeeDate     = [];
+        $absenceColorByEmployeeDate     = [];
         foreach ($absences as $absence) {
             $employeeId = $absence->getEmployee()?->getId();
             if (!$employeeId) {
@@ -154,7 +145,16 @@ final readonly class WorkHourWeeklySummaryProvider implements ProviderInterface
                     continue;
                 }
 
-                [$absentMorning, $absentAfternoon]          = $this->absenceSegmentsResolver->resolveForDate($absence, $date);
+                [$absentMorning, $absentAfternoon] = $this->absenceSegmentsResolver->resolveForDate($absence, $date);
+                if ($absentMorning || $absentAfternoon) {
+                    $absenceByEmployeeDate[$employeeId][$date] = true;
+                    if (!isset($absenceLabelByEmployeeDate[$employeeId][$date])) {
+                        $absenceLabelByEmployeeDate[$employeeId][$date] = $absence->getType()?->getLabel();
+                    }
+                    if (!isset($absenceColorByEmployeeDate[$employeeId][$date])) {
+                        $absenceColorByEmployeeDate[$employeeId][$date] = $absence->getType()?->getColor();
+                    }
+                }
                 $creditedByEmployeeDate[$employeeId][$date] = ($creditedByEmployeeDate[$employeeId][$date] ?? 0)
                     + $this->workedHoursCreditPolicy->computeCreditedMinutes($absence, $date, $absentMorning, $absentAfternoon);
                 $creditedPresenceByEmployeeDate[$employeeId][$date] = ($creditedPresenceByEmployeeDate[$employeeId][$date] ?? 0.0)
@@ -175,7 +175,7 @@ final readonly class WorkHourWeeklySummaryProvider implements ProviderInterface
             $weeklyPresenceCount = 0.0;
             $daily               = [];
             // Les contrats au suivi "présence" ne manipulent pas les heures, mais des demi-journées.
-            $isPresenceTracking = 'PRESENCE' === $employee->getContract()?->getTrackingMode();
+            $isPresenceTracking = TrackingMode::PRESENCE->value === $employee->getContract()?->getTrackingMode();
 
             foreach ($days as $date) {
                 $entry           = $metricsByEmployeeDate[$employeeId][$date] ?? null;
@@ -198,46 +198,51 @@ final readonly class WorkHourWeeklySummaryProvider implements ProviderInterface
                     $weeklyPresenceCount += $present;
                 }
 
-                $daily[] = [
-                    'date'         => $date,
-                    'dayMinutes'   => $metrics->dayMinutes,
-                    'nightMinutes' => $metrics->nightMinutes,
-                    'totalMinutes' => $metrics->totalMinutes,
-                    'present'      => $present,
-                ];
+                $daily[] = new WeeklyDaySummary(
+                    date: $date,
+                    dayMinutes: $metrics->dayMinutes,
+                    nightMinutes: $metrics->nightMinutes,
+                    totalMinutes: $metrics->totalMinutes,
+                    present: $present,
+                    hasAbsence: $absenceByEmployeeDate[$employeeId][$date] ?? false,
+                    absenceLabel: $absenceLabelByEmployeeDate[$employeeId][$date] ?? null,
+                    absenceColor: $absenceColorByEmployeeDate[$employeeId][$date] ?? null,
+                );
             }
 
             $contractWeeklyHours        = $employee->getContract()?->getWeeklyHours();
+            $disableOvertimeBonuses     = $this->hasDisabledOvertimeBonuses($employee);
             $weeklyOvertimeTotalMinutes = $isPresenceTracking
                 ? 0
                 : $this->computeOvertimeTotalMinutes($weeklyTotalMinutes, $contractWeeklyHours);
-            $weeklyOvertime25Minutes = $isPresenceTracking
+            $weeklyOvertime25Minutes = ($isPresenceTracking || $disableOvertimeBonuses)
                 ? 0
                 : $this->computeOvertime25BonusMinutes($weeklyTotalMinutes, $contractWeeklyHours);
-            $weeklyOvertime50Minutes = $isPresenceTracking
+            $weeklyOvertime50Minutes = ($isPresenceTracking || $disableOvertimeBonuses)
                 ? 0
                 : $this->computeOvertime50BonusMinutes($weeklyTotalMinutes);
-            $weeklyRecoveryMinutes = $isPresenceTracking
+            $weeklyRecoveryMinutes = ($isPresenceTracking || $disableOvertimeBonuses)
                 ? 0
                 : $weeklyOvertimeTotalMinutes + $weeklyOvertime25Minutes + $weeklyOvertime50Minutes;
 
-            $rows[] = [
-                'employeeId'                 => $employeeId,
-                'firstName'                  => $employee->getFirstName(),
-                'lastName'                   => $employee->getLastName(),
-                'siteName'                   => $employee->getSite()?->getName(),
-                'contractName'               => $employee->getContract()?->getName(),
-                'trackingMode'               => $employee->getContract()?->getTrackingMode(),
-                'daily'                      => $daily,
-                'weeklyDayMinutes'           => $weeklyDayMinutes,
-                'weeklyNightMinutes'         => $weeklyNightMinutes,
-                'weeklyTotalMinutes'         => $weeklyTotalMinutes,
-                'weeklyPresenceCount'        => $weeklyPresenceCount,
-                'weeklyOvertimeTotalMinutes' => $weeklyOvertimeTotalMinutes,
-                'weeklyOvertime25Minutes'    => $weeklyOvertime25Minutes,
-                'weeklyOvertime50Minutes'    => $weeklyOvertime50Minutes,
-                'weeklyRecoveryMinutes'      => $weeklyRecoveryMinutes,
-            ];
+            $rows[] = new WeeklySummaryRow(
+                employeeId: $employeeId,
+                firstName: $employee->getFirstName(),
+                lastName: $employee->getLastName(),
+                siteName: $employee->getSite()?->getName(),
+                contractName: $employee->getContract()?->getName(),
+                contractType: $employee->getContract()?->getType()->value,
+                trackingMode: $employee->getContract()?->getTrackingMode(),
+                daily: $daily,
+                weeklyDayMinutes: $weeklyDayMinutes,
+                weeklyNightMinutes: $weeklyNightMinutes,
+                weeklyTotalMinutes: $weeklyTotalMinutes,
+                weeklyPresenceCount: $weeklyPresenceCount,
+                weeklyOvertimeTotalMinutes: $weeklyOvertimeTotalMinutes,
+                weeklyOvertime25Minutes: $weeklyOvertime25Minutes,
+                weeklyOvertime50Minutes: $weeklyOvertime50Minutes,
+                weeklyRecoveryMinutes: $weeklyRecoveryMinutes
+            );
         }
 
         return $rows;
@@ -369,4 +374,16 @@ final readonly class WorkHourWeeklySummaryProvider implements ProviderInterface
 
         return (int) round($trancheMinutes * 0.5);
     }
+
+    private function hasDisabledOvertimeBonuses(Employee $employee): bool
+    {
+        $contract = $employee->getContract();
+        $type     = ContractType::resolve(
+            $contract?->getName(),
+            $contract?->getTrackingMode(),
+            $contract?->getWeeklyHours()
+        );
+
+        return ContractType::INTERIM === $type;
+    }
 }
diff --git a/tests/State/WorkHourWeeklySummaryProviderTest.php b/tests/State/WorkHourWeeklySummaryProviderTest.php
index c3697a3..1087d2f 100644
--- a/tests/State/WorkHourWeeklySummaryProviderTest.php
+++ b/tests/State/WorkHourWeeklySummaryProviderTest.php
@@ -70,7 +70,8 @@ final class WorkHourWeeklySummaryProviderTest extends TestCase
         $user             = new User();
         $timeEmployee     = $this->buildEmployee(1, 'TIME', 35, 'Alice');
         $presenceEmployee = $this->buildEmployee(2, 'PRESENCE', null, 'Bob');
-        $employees        = [$timeEmployee, $presenceEmployee];
+        $interimEmployee  = $this->buildEmployee(3, 'TIME', 35, 'Charly', 'Interim');
+        $employees        = [$timeEmployee, $presenceEmployee, $interimEmployee];
 
         $workHours = [];
         foreach (['2026-02-16', '2026-02-17', '2026-02-18', '2026-02-19', '2026-02-20'] as $date) {
@@ -80,6 +81,12 @@ final class WorkHourWeeklySummaryProviderTest extends TestCase
                 ->setMorningFrom('09:00')
                 ->setMorningTo('19:00')
             ;
+            $workHours[] = new WorkHour()
+                ->setEmployee($interimEmployee)
+                ->setWorkDate(new DateTimeImmutable($date))
+                ->setMorningFrom('09:00')
+                ->setMorningTo('19:00')
+            ;
         }
 
         $absenceType = new AbsenceType()
@@ -117,22 +124,29 @@ final class WorkHourWeeklySummaryProviderTest extends TestCase
 
         self::assertSame('2026-02-16', $result->weekStart);
         self::assertSame('2026-02-22', $result->weekEnd);
-        self::assertCount(2, $result->rows);
+        self::assertCount(3, $result->rows);
 
-        self::assertSame(3000, $result->rows[0]['weeklyTotalMinutes']);
-        self::assertSame(900, $result->rows[0]['weeklyOvertimeTotalMinutes']);
-        self::assertSame(120, $result->rows[0]['weeklyOvertime25Minutes']);
-        self::assertSame(210, $result->rows[0]['weeklyOvertime50Minutes']);
-        self::assertSame(1230, $result->rows[0]['weeklyRecoveryMinutes']);
+        self::assertSame(3000, $result->rows[0]->weeklyTotalMinutes);
+        self::assertSame(900, $result->rows[0]->weeklyOvertimeTotalMinutes);
+        self::assertSame(120, $result->rows[0]->weeklyOvertime25Minutes);
+        self::assertSame(210, $result->rows[0]->weeklyOvertime50Minutes);
+        self::assertSame(1230, $result->rows[0]->weeklyRecoveryMinutes);
 
-        self::assertSame(1.0, $result->rows[1]['weeklyPresenceCount']);
-        self::assertSame(0, $result->rows[1]['weeklyOvertimeTotalMinutes']);
+        self::assertSame(1.0, $result->rows[1]->weeklyPresenceCount);
+        self::assertTrue($result->rows[1]->daily[0]->hasAbsence);
+        self::assertSame('Congé', $result->rows[1]->daily[0]->absenceLabel);
+        self::assertSame('#000', $result->rows[1]->daily[0]->absenceColor);
+        self::assertSame(0, $result->rows[1]->weeklyOvertimeTotalMinutes);
+        self::assertSame(0, $result->rows[2]->weeklyOvertime25Minutes);
+        self::assertSame(0, $result->rows[2]->weeklyOvertime50Minutes);
+        self::assertSame(0, $result->rows[2]->weeklyRecoveryMinutes);
+        self::assertSame(900, $result->rows[2]->weeklyOvertimeTotalMinutes);
     }
 
-    private function buildEmployee(int $id, string $trackingMode, ?int $weeklyHours, string $firstName): Employee
+    private function buildEmployee(int $id, string $trackingMode, ?int $weeklyHours, string $firstName, ?string $contractName = null): Employee
     {
         $contract = new Contract()
-            ->setName($trackingMode)
+            ->setName($contractName ?? $trackingMode)
             ->setTrackingMode($trackingMode)
             ->setWeeklyHours($weeklyHours)
         ;