data comes to controller but not to view

 public ActionResult Index()
        {
         
        GetEmployee();

        return View();
    }

    private void GetEmployee()
    {
       
        SocialMedia item = new SocialMedia();
        var employee = _employeeRepository.GetById(Session.GetEmployeeNo());           
           //employee.No, employee.ManagerNo
            item.FirstName = employee.FirstName;
            item.LastName = employee.LastName;
            item.Departmen = employee.PositionCode;
        item.FullName = item.FirstName + " " + item.LastName;
        
    }

And my HTML

@using Models.Model

@model Models.Model.SocialMedia
                            <div>
                                @Html.LabelFor(model => model.FullName)
                            </div>
                            <div>
                                @Html.LabelFor(model=>model.Departmen)
                            </div>

And My result is

FullName
Departmen

Name,surname and departmen were supposed to come but didn’t.
Can you help me