diff --git a/frontend/services/dto/contract-phase.ts b/frontend/services/dto/contract-phase.ts
new file mode 100644
index 0000000..00e5432
--- /dev/null
+++ b/frontend/services/dto/contract-phase.ts
@@ -0,0 +1,13 @@
+import type { ContractType } from './contract'
+
+export type ContractPhase = {
+  id: number
+  contractType: ContractType
+  weeklyHours: number | null
+  isDriver: boolean
+  startDate: string
+  endDate: string | null
+  periodIds: number[]
+  isCurrent: boolean
+  contractNature: 'CDI' | 'CDD' | 'INTERIM'
+}
diff --git a/frontend/services/dto/employee.ts b/frontend/services/dto/employee.ts
index b7764b2..55bc8e2 100644
--- a/frontend/services/dto/employee.ts
+++ b/frontend/services/dto/employee.ts
@@ -1,5 +1,6 @@
 import type { Site } from './site'
 import type { Contract } from './contract'
+import type { ContractPhase } from './contract-phase'
 
 export type ContractSuspension = {
   id: number
@@ -41,4 +42,5 @@ export type Employee = {
   currentSuspensions?: ContractSuspension[]
   currentInterimAgencyId?: number | null
   currentInterimAgencyName?: string | null
+  contractPhases?: ContractPhase[]
 }