diff --git a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/CollaborateurApiDto.cs b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/CollaborateurApiDto.cs
index 4c432fd..731c835 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/CollaborateurApiDto.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/CollaborateurApiDto.cs
@@ -4,7 +4,7 @@ using espacecollab.backend.appservices.dtos.Values;
 namespace espacecollab.backend.appservices.dtos;
 
 public record CollaborateurApiDto(uint Id, string Name, string FirstName, DateTime BirthDate, EnumGenreApi Gender, EnumStatutApi Status, int ChildrenNumber, string Address, 
-    string Telephone, string PersonalMail, string ApsideMail, DateTime ResignationDate, int ReferrerId, int BusinessUnitId) : IGenericIdApiDto
+    string Telephone, string PersonalMail, string ApsideMail, DateTime? ResignationDate, int ReferrerId, int BusinessUnitId) : IGenericIdApiDto
 {
     public uint Id { get; set; } = Id;
 }
\ No newline at end of file
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/CollaborateurSqlDto.cs b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/CollaborateurSqlDto.cs
index 8803af6..3874a61 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/CollaborateurSqlDto.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/CollaborateurSqlDto.cs
@@ -21,7 +21,7 @@ public class CollaborateurSqlDto : IGenericIdSqlDto
     public string Telephone { get; set; }
     public string PersonalMail { get; set; }
     public string ApsideMail { get; set; }
-    public DateTime ResignationDate { get; set; }
+    public DateTime? ResignationDate { get; set; }
     public int ReferrerId { get; set; }
     public int BusinessUnitId { get; set; }
 
@@ -36,7 +36,7 @@ public class CollaborateurSqlDto : IGenericIdSqlDto
         ApsideMail = string.Empty;
     }
 
-    public CollaborateurSqlDto(int id, string name, string firstName, DateTime birthDate, EnumGenreSql gender, EnumStatutSql status, int childrenNumber, string address, string telephone, string personalMail, string apsideMail, DateTime resignationDate, int referrerId, int businessUnitId)
+    public CollaborateurSqlDto(int id, string name, string firstName, DateTime birthDate, EnumGenreSql gender, EnumStatutSql status, int childrenNumber, string address, string telephone, string personalMail, string apsideMail, DateTime? resignationDate, int referrerId, int businessUnitId)
     {
         Id = id;
         Name = name;