diff --git a/frontend/composables/useEmployeeDetailPage.ts b/frontend/composables/useEmployeeDetailPage.ts
index bfdadce..afd25b5 100644
--- a/frontend/composables/useEmployeeDetailPage.ts
+++ b/frontend/composables/useEmployeeDetailPage.ts
@@ -1,6 +1,7 @@
 import type { Employee } from '~/services/dto/employee'
 import { CONTRACT_TYPES } from '~/services/dto/contract'
 import { getEmployee } from '~/services/employees'
+import { useEmployeeContractPhase } from '~/composables/useEmployeeContractPhase'
 
 export const useEmployeeDetailPage = () => {
   const route = useRoute()
@@ -8,9 +9,11 @@ export const useEmployeeDetailPage = () => {
   const isLoading = ref(false)
   const activeTab = ref<'contract' | 'leave' | 'rtt' | 'mileage' | 'formation' | 'bonus' | 'observation'>('contract')
 
+  const phase = useEmployeeContractPhase(employee)
+
   const showLeaveTab = computed(() => employee.value?.currentContractNature !== 'INTERIM')
-  const showRttTab = computed(() => employee.value?.contract?.type !== CONTRACT_TYPES.FORFAIT)
-  const isForfait = computed(() => employee.value?.contract?.type === CONTRACT_TYPES.FORFAIT)
+  const showRttTab = computed(() => phase.selectedPhase.value?.contractType !== CONTRACT_TYPES.FORFAIT)
+  const isForfait = computed(() => phase.selectedPhase.value?.contractType === CONTRACT_TYPES.FORFAIT)
   const employeeContractWorkLabel = computed(() => {
     const contract = employee.value?.contract
     if (!contract) return '-'
@@ -29,6 +32,7 @@ export const useEmployeeDetailPage = () => {
     isLoading.value = true
     try {
       employee.value = await getEmployee(employeeId)
+      phase.resetToCurrent()
 
       if (!showLeaveTab.value && activeTab.value === 'leave') {
         activeTab.value = 'contract'
@@ -66,7 +70,7 @@ export const useEmployeeDetailPage = () => {
   }
 
   const contract = useEmployeeContract(employee, loadEmployee)
-  const leave = useEmployeeLeave(employee, loadEmployee)
+  const leave = useEmployeeLeave(employee, loadEmployee, phase.selectedPhase)
   const forfaitRemainingDaysLabel = computed(() => {
     if (!isForfait.value) return ''
     const presence = leave.leaveSummary.value?.presenceDaysToToday
@@ -74,12 +78,26 @@ export const useEmployeeDetailPage = () => {
     const remaining = 218 - presence
     return ` (${remaining} restants)`
   })
-  const rtt = useEmployeeRtt(employee, loadEmployee)
+  const rtt = useEmployeeRtt(employee, loadEmployee, phase.selectedPhase)
   const mileage = useEmployeeMileage(employee, loadEmployee)
   const formation = useEmployeeFormation(employee, loadEmployee)
   const bonus = useEmployeeBonus(employee, loadEmployee)
   const observation = useEmployeeObservation(employee, loadEmployee)
 
+  watch(() => phase.selectedPhase.value?.id, (newId, oldId) => {
+    if (newId === oldId || oldId === undefined) return
+    // Bascule onglet si on entre dans une phase qui ne supporte plus le tab actuel
+    if (!showRttTab.value && activeTab.value === 'rtt') {
+      activeTab.value = 'leave'
+    }
+    // Recharger l'onglet courant
+    if (activeTab.value === 'leave' && showLeaveTab.value) {
+      leave.loadLeaveData()
+    } else if (activeTab.value === 'rtt' && showRttTab.value) {
+      rtt.loadRttData()
+    }
+  })
+
   watch(activeTab, (tab) => {
     if (tab === 'leave' && !leave.leaveDataLoaded.value && showLeaveTab.value) {
       leave.loadLeaveData()
@@ -109,6 +127,7 @@ export const useEmployeeDetailPage = () => {
     showRttTab,
     employeeContractWorkLabel,
     forfaitRemainingDaysLabel,
+    ...phase,
     ...contract,
     ...leave,
     ...rtt,