diff --git a/Marco.Pms.Model/Dtos/ServiceProject/JobCommentDto.cs b/Marco.Pms.Model/Dtos/ServiceProject/JobCommentDto.cs
new file mode 100644
index 0000000..0e738f0
--- /dev/null
+++ b/Marco.Pms.Model/Dtos/ServiceProject/JobCommentDto.cs
@@ -0,0 +1,8 @@
+namespace Marco.Pms.Model.Dtos.ServiceProject
+{
+    public class JobCommentDto
+    {
+        public required Guid JobTicketId { get; set; }
+        public required string Comment { get; set; }
+    }
+}
diff --git a/Marco.Pms.Services/Controllers/ServiceProjectController.cs b/Marco.Pms.Services/Controllers/ServiceProjectController.cs
index 0024f0c..1935b32 100644
--- a/Marco.Pms.Services/Controllers/ServiceProjectController.cs
+++ b/Marco.Pms.Services/Controllers/ServiceProjectController.cs
@@ -123,6 +123,19 @@ namespace Marco.Pms.Services.Controllers
             }
             return StatusCode(response.StatusCode, response);
         }
+
+        [HttpPost("job/add/comment")]
+        public async Task<IActionResult> AddCommentToJobTicket(JobCommentDto model)
+        {
+            Employee loggedInEmploee = await _userHelper.GetCurrentEmployeeAsync();
+            var response = await _serviceProject.AddCommentToJobTicketAsync(model, loggedInEmploee, tenantId);
+            if (response.Success)
+            {
+                var notification = new { LoggedInUserId = loggedInEmploee.Id, Keyword = "Job_Ticket_Comment", Response = response.Data };
+                await _signalR.SendNotificationAsync(notification);
+            }
+            return StatusCode(response.StatusCode, response);
+        }
         #endregion
     }
 }
diff --git a/Marco.Pms.Services/MappingProfiles/MappingProfile.cs b/Marco.Pms.Services/MappingProfiles/MappingProfile.cs
index b667067..8b45d37 100644
--- a/Marco.Pms.Services/MappingProfiles/MappingProfile.cs
+++ b/Marco.Pms.Services/MappingProfiles/MappingProfile.cs
@@ -207,6 +207,8 @@ namespace Marco.Pms.Services.MappingProfiles
                 dest => dest.StatusName,
                 opt => opt.MapFrom(src => src.Status != null ? src.Status.Name : null));
 
+            CreateMap<JobComment, JobCommentVM>();
+
             #endregion
             #endregion
 
diff --git a/Marco.Pms.Services/Service/ServiceInterfaces/IServiceProject.cs b/Marco.Pms.Services/Service/ServiceInterfaces/IServiceProject.cs
index 122811f..7ebb8f6 100644
--- a/Marco.Pms.Services/Service/ServiceInterfaces/IServiceProject.cs
+++ b/Marco.Pms.Services/Service/ServiceInterfaces/IServiceProject.cs
@@ -19,6 +19,7 @@ namespace Marco.Pms.Services.Service.ServiceInterfaces
         Task<ApiResponse<object>> GetJobTicketsListAsync(Guid? projectId, int pageNumber, int pageSize, bool isActive, Employee loggedInEmployee, Guid tenantId);
         Task<ApiResponse<object>> GetJobTicketDetailsAsync(Guid id, Employee loggedInEmployee, Guid tenantId);
         Task<ApiResponse<object>> CreateJobTicketAsync(CreateJobTicketDto model, Employee loggedInEmployee, Guid tenantId);
+        Task<ApiResponse<object>> AddCommentToJobTicketAsync(JobCommentDto model, Employee loggedInEmployee, Guid tenantId);
         #endregion
     }
 
diff --git a/Marco.Pms.Services/Service/ServiceProjectService.cs b/Marco.Pms.Services/Service/ServiceProjectService.cs
index 8f4178b..c7f50ba 100644
--- a/Marco.Pms.Services/Service/ServiceProjectService.cs
+++ b/Marco.Pms.Services/Service/ServiceProjectService.cs
@@ -618,8 +618,6 @@ namespace Marco.Pms.Services.Service
             }
         }
 
-
-
         /// <summary>
         /// Creates a new job ticket with optional assignees and tags within a transactional scope.
         /// </summary>
@@ -798,6 +796,74 @@ namespace Marco.Pms.Services.Service
                 return ApiResponse<object>.ErrorResponse("Internal Server Error", "An unexpected error occurred.", 500);
             }
         }
+        /// <summary>
+        /// Adds a new comment to an existing job ticket within the tenant context.
+        /// </summary>
+        /// <param name="model">Comment data transfer object containing the job ticket ID and comment text.</param>
+        /// <param name="loggedInEmployee">Employee adding the comment (for auditing).</param>
+        /// <param name="tenantId">Tenant identifier to enforce multi-tenancy.</param>
+        /// <returns>ApiResponse with the created comment view or error details.</returns>
+        public async Task<ApiResponse<object>> AddCommentToJobTicketAsync(JobCommentDto model, Employee loggedInEmployee, Guid tenantId)
+        {
+            if (tenantId == Guid.Empty)
+            {
+                _logger.LogWarning("Add comment attempt with invalid tenant context by employee {EmployeeId}", loggedInEmployee.Id);
+                return ApiResponse<object>.ErrorResponse("Access Denied", "Invalid tenant context.", 403);
+            }
+
+            if (model == null || model.JobTicketId == Guid.Empty || string.IsNullOrWhiteSpace(model.Comment))
+            {
+                _logger.LogInfo("Invalid comment model provided by employee {EmployeeId}", loggedInEmployee.Id);
+                return ApiResponse<object>.ErrorResponse("Bad Request", "Comment data is incomplete or invalid.", 400);
+            }
+
+            try
+            {
+                _logger.LogInfo("Attempting to add comment to job ticket {JobTicketId} by employee {EmployeeId}", model.JobTicketId, loggedInEmployee.Id);
+
+                // Verify if the job ticket exists within tenant and load status for response mapping
+                var jobTicket = await _context.JobTickets
+                    .Include(jt => jt.Status)
+                    .AsNoTracking()
+                    .FirstOrDefaultAsync(jt => jt.Id == model.JobTicketId && jt.TenantId == tenantId);
+
+                if (jobTicket == null)
+                {
+                    _logger.LogWarning("Job ticket {JobTicketId} not found or inaccessible in tenant {TenantId}", model.JobTicketId, tenantId);
+                    return ApiResponse<object>.ErrorResponse("Job Not Found", "Job ticket not found or inaccessible.", 404);
+                }
+
+                // Create and save new comment entity
+                var comment = new JobComment
+                {
+                    Id = Guid.NewGuid(),
+                    JobTicketId = jobTicket.Id,
+                    Comment = model.Comment.Trim(),
+                    CreatedAt = DateTime.UtcNow,
+                    CreatedById = loggedInEmployee.Id,
+                    TenantId = tenantId
+                };
+
+                _context.JobComments.Add(comment);
+                await _context.SaveChangesAsync();
+
+                // Map response including basic job ticket info
+                var response = _mapper.Map<JobCommentVM>(comment);
+                response.JobTicket = _mapper.Map<BasicJobTicketVM>(jobTicket);
+
+                _logger.LogInfo("Successfully added comment {CommentId} to job ticket {JobTicketId} by employee {EmployeeId}",
+                    comment.Id, jobTicket.Id, loggedInEmployee.Id);
+
+                return ApiResponse<object>.SuccessResponse(response, "Comment added to job ticket successfully.", 201);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error adding comment to job ticket {JobTicketId} by employee {EmployeeId} in tenant {TenantId}",
+                    model.JobTicketId, loggedInEmployee.Id, tenantId);
+                return ApiResponse<object>.ErrorResponse("Internal Server Error", "Failed to add comment. Please try again later.", 500);
+            }
+        }
+
 
         #endregion
     }