diff --git a/Collaborateur_Epa_Back/espacecollab.backend.api/Controllers/BaseController.cs b/Collaborateur_Epa_Back/espacecollab.backend.api/Controllers/BaseController.cs
index 0ec5b6c..9fcc857 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.api/Controllers/BaseController.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.api/Controllers/BaseController.cs
@@ -51,7 +51,7 @@ namespace espacecollab.backend.api.Controllers
             return Ok();
         }
 
-        [HttpPut("{collaborateurId:int:min(1)}")]
+        [HttpPut("{id:int:min(1)}")]
         public ActionResult<TO> Update(uint id, TO apiDto)
         {
             if (apiDto.Id != id)
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.api/Controllers/BusinessUnitController.cs b/Collaborateur_Epa_Back/espacecollab.backend.api/Controllers/BusinessUnitController.cs
new file mode 100644
index 0000000..9606c8b
--- /dev/null
+++ b/Collaborateur_Epa_Back/espacecollab.backend.api/Controllers/BusinessUnitController.cs
@@ -0,0 +1,12 @@
+using espacecollab.backend.appservices;
+using espacecollab.backend.infrastructure.sql.dtos;
+
+namespace espacecollab.backend.api.Controllers
+{
+    public class BusinessUnitController : BaseController<BusinessUnitApiDto>
+    {
+        public BusinessUnitController(BusinessUnitService businessUnitService) : base(businessUnitService)
+        {
+        }
+    }
+}
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.api/Controllers/CollaborateursController.cs b/Collaborateur_Epa_Back/espacecollab.backend.api/Controllers/CollaborateursController.cs
index d23bff9..13cc349 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.api/Controllers/CollaborateursController.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.api/Controllers/CollaborateursController.cs
@@ -8,9 +8,9 @@ namespace espacecollab.backend.api.Controllers
     //[ApiController]
     public class CollaborateursController : BaseController<CollaborateurApiDto>
     {
-        private CollaborateursServices CollaborateursServices { get; }
+        private CollaborateursService CollaborateursServices { get; }
 
-        public CollaborateursController(CollaborateursServices collaborateursServices) : base(collaborateursServices)
+        public CollaborateursController(CollaborateursService collaborateursServices) : base(collaborateursServices)
         {
             CollaborateursServices = collaborateursServices;
         }
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.api/Register.cs b/Collaborateur_Epa_Back/espacecollab.backend.api/Register.cs
index 603e14a..412442c 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.api/Register.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.api/Register.cs
@@ -11,19 +11,22 @@ internal static class Register
 {
     public static void InjectDependencies(IServiceCollection services, SqlOption contextOptions)
     {
-        services.AddScoped<CollaborateursServices>();
+        services.AddScoped<CollaborateursService>();
         services.AddScoped<AgenceService>();
+        services.AddScoped<BusinessUnitService>();
 
         if (contextOptions.LoadFake)
         {
             services.AddSingleton<ICollaborateurRepository, FakeCollaborateurRepository>();
             services.AddSingleton<IAgenceRepository, FakeAgenceRepository>();
+            services.AddSingleton<IBusinessUnitRepository, FakeBusinessUnitRepository>();
         }
         else
         {
             services.AddScoped<MainDbContext>();
             services.AddScoped<ICollaborateurRepository, CollaborateurSqlRepository>();
             services.AddScoped<IAgenceRepository, AgenceSqlRepository>();
+            services.AddScoped<IBusinessUnitRepository, BusinessUnitSqlRepository>();
         }
     }
 }
\ No newline at end of file
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/BusinessUnitApiDto.cs b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/BusinessUnitApiDto.cs
new file mode 100644
index 0000000..ef1077c
--- /dev/null
+++ b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/BusinessUnitApiDto.cs
@@ -0,0 +1,9 @@
+using espacecollab.backend.appservices.dtos.Interfaces;
+
+namespace espacecollab.backend.infrastructure.sql.dtos
+{
+    public record BusinessUnitApiDto(uint Id, string Name, uint AgenceId) : IGenericIdApiDto
+    {
+        public uint Id { get; set; } = Id;
+    }
+}
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/CollaborateurApiDto.cs b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/CollaborateurApiDto.cs
index ceb58c5..13717bc 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/CollaborateurApiDto.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/CollaborateurApiDto.cs
@@ -1,4 +1,5 @@
 using espacecollab.backend.appservices.dtos.Interfaces;
+using espacecollab.backend.appservices.dtos.Values;
 
 namespace espacecollab.backend.appservices.dtos
 {
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Interfaces/IGenericIdSqlDto.cs b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Interfaces/IGenericIdApiDto.cs
similarity index 100%
rename from Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Interfaces/IGenericIdSqlDto.cs
rename to Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Interfaces/IGenericIdApiDto.cs
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Mappers/BusinessUnitMapper.cs b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Mappers/BusinessUnitMapper.cs
new file mode 100644
index 0000000..983558a
--- /dev/null
+++ b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Mappers/BusinessUnitMapper.cs
@@ -0,0 +1,15 @@
+using espacecollab.backend.infrastructure.sql.dtos;
+
+namespace espacecollab.backend.appservices.dtos.Mappers;
+
+public static class BusinessUnitMapper
+{
+    public static BusinessUnitApiDto ToApi(this BusinessUnitSqlDto businessUnitSqlDto)
+    {
+        return new BusinessUnitApiDto((uint)businessUnitSqlDto.Id, businessUnitSqlDto.Name, (uint)businessUnitSqlDto.AgenceId);
+    }
+    public static BusinessUnitSqlDto ToSql(this BusinessUnitApiDto businessUnitApiDto)
+    {
+        return new BusinessUnitSqlDto((int)businessUnitApiDto.Id, businessUnitApiDto.Name, (int)businessUnitApiDto.AgenceId);
+    }
+}
\ No newline at end of file
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Mappers/EnumGenreMapper.cs b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Mappers/EnumGenreMapper.cs
index ff142fc..9ec076a 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Mappers/EnumGenreMapper.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Mappers/EnumGenreMapper.cs
@@ -1,4 +1,5 @@
-using espacecollab.backend.infrastructure.sql.dtos.Values;
+using espacecollab.backend.appservices.dtos.Values;
+using espacecollab.backend.infrastructure.sql.dtos.Values;
 
 namespace espacecollab.backend.appservices.dtos.Mappers
 {
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Mappers/EnumStatutMapper.cs b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Mappers/EnumStatutMapper.cs
index 85a6e5d..9f7e1ca 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Mappers/EnumStatutMapper.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Mappers/EnumStatutMapper.cs
@@ -1,4 +1,5 @@
-using espacecollab.backend.infrastructure.sql.dtos.Values;
+using espacecollab.backend.appservices.dtos.Values;
+using espacecollab.backend.infrastructure.sql.dtos.Values;
 
 namespace espacecollab.backend.appservices.dtos.Mappers
 {
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/EnumGenreApi.cs b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Values/EnumGenreApi.cs
similarity index 61%
rename from Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/EnumGenreApi.cs
rename to Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Values/EnumGenreApi.cs
index 9414526..ea0429a 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/EnumGenreApi.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Values/EnumGenreApi.cs
@@ -1,4 +1,4 @@
-namespace espacecollab.backend.appservices.dtos
+namespace espacecollab.backend.appservices.dtos.Values
 {
     public enum EnumGenreApi
     {
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/EnumStatutApi.cs b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Values/EnumStatutApi.cs
similarity index 65%
rename from Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/EnumStatutApi.cs
rename to Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Values/EnumStatutApi.cs
index 0cad417..d95441f 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/EnumStatutApi.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.appservices.dtos/Values/EnumStatutApi.cs
@@ -1,4 +1,4 @@
-namespace espacecollab.backend.appservices.dtos
+namespace espacecollab.backend.appservices.dtos.Values
 {
     public enum EnumStatutApi
     {
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.appservices/BusinessUnitService.cs b/Collaborateur_Epa_Back/espacecollab.backend.appservices/BusinessUnitService.cs
new file mode 100644
index 0000000..16bb915
--- /dev/null
+++ b/Collaborateur_Epa_Back/espacecollab.backend.appservices/BusinessUnitService.cs
@@ -0,0 +1,13 @@
+using espacecollab.backend.appservices.dtos.Mappers;
+using espacecollab.backend.infrastructure.interfaces;
+using espacecollab.backend.infrastructure.sql.dtos;
+
+namespace espacecollab.backend.appservices;
+
+public class BusinessUnitService : GenericsServices<BusinessUnitSqlDto, BusinessUnitApiDto>
+{
+    public BusinessUnitService(IBusinessUnitRepository genericRepository)
+        : base(genericRepository, BusinessUnitMapper.ToApi, BusinessUnitMapper.ToSql)
+    {
+    }
+}
\ No newline at end of file
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.appservices/CollaborateursServices.cs b/Collaborateur_Epa_Back/espacecollab.backend.appservices/CollaborateursService.cs
similarity index 87%
rename from Collaborateur_Epa_Back/espacecollab.backend.appservices/CollaborateursServices.cs
rename to Collaborateur_Epa_Back/espacecollab.backend.appservices/CollaborateursService.cs
index f9039c7..18c2ba7 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.appservices/CollaborateursServices.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.appservices/CollaborateursService.cs
@@ -5,11 +5,11 @@ using espacecollab.backend.infrastructure.sql.dtos;
 
 namespace espacecollab.backend.appservices
 {
-    public class CollaborateursServices : GenericsServices<CollaborateurSqlDto, CollaborateurApiDto>
+    public class CollaborateursService : GenericsServices<CollaborateurSqlDto, CollaborateurApiDto>
     {
         private ICollaborateurRepository CollaborateurRepository { get; }
 
-        public CollaborateursServices(ICollaborateurRepository collaborateurRepository)
+        public CollaborateursService(ICollaborateurRepository collaborateurRepository)
             : base(collaborateurRepository, CollaborateurMapper.ToApi, CollaborateurMapper.ToSql)
         {
             CollaborateurRepository = collaborateurRepository;
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.appservices/GenericsServices.cs b/Collaborateur_Epa_Back/espacecollab.backend.appservices/GenericsServices.cs
index d1c65c2..7798d35 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.appservices/GenericsServices.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.appservices/GenericsServices.cs
@@ -48,9 +48,8 @@ namespace espacecollab.backend.appservices
         public TO? Update(TO apiDto)
         {
             if (GetById(apiDto.Id) == null)
-            {
                 return null;
-            }
+
             T sqlDto = MapperToSqlDto(apiDto);
             T? sqlDtoValidation = GenericRepository.Update(sqlDto);
 
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.fake/FakeBusinessUnitRepository.cs b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.fake/FakeBusinessUnitRepository.cs
new file mode 100644
index 0000000..e9d99ed
--- /dev/null
+++ b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.fake/FakeBusinessUnitRepository.cs
@@ -0,0 +1,18 @@
+using espacecollab.backend.infrastructure.interfaces;
+using espacecollab.backend.infrastructure.sql.dtos;
+
+namespace espacecollab.backend.infrastructure.fake
+{
+    public class FakeBusinessUnitRepository : GenericFakeRepository<BusinessUnitSqlDto>, IBusinessUnitRepository
+    {
+        public FakeBusinessUnitRepository()
+        {
+            Context = new List<BusinessUnitSqlDto>
+            {
+                new(1, "BU 1", 1),
+
+                new(2, "BU 2", 1)
+            };
+        }
+    }
+}
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.fake/GenericFakeRepository.cs b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.fake/GenericFakeRepository.cs
index f155d9c..08dae61 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.fake/GenericFakeRepository.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.fake/GenericFakeRepository.cs
@@ -5,7 +5,7 @@ namespace espacecollab.backend.infrastructure.fake
 {
     public class GenericFakeRepository<T> : IGenericRepository<T> where T : class, IGenericIdSqlDto
     {
-        protected List<T> Context { get; set; }
+        protected List<T> Context { get; set; } = new();
 
         public virtual T? Add(T entity)
         {
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql/Repository/BusinessUnitSqlRepository.cs b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql/Repository/BusinessUnitSqlRepository.cs
new file mode 100644
index 0000000..eebf77b
--- /dev/null
+++ b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql/Repository/BusinessUnitSqlRepository.cs
@@ -0,0 +1,11 @@
+using espacecollab.backend.infrastructure.interfaces;
+using espacecollab.backend.infrastructure.sql.dtos;
+
+namespace espacecollab.backend.infrastructure.sql.Repository;
+
+public class BusinessUnitSqlRepository : GenericSqlRepository<BusinessUnitSqlDto>, IBusinessUnitRepository
+{
+    public BusinessUnitSqlRepository(MainDbContext context) : base(context)
+    {
+    }
+}
\ No newline at end of file