Left Outer Join in LINQ

Entity classes

public class EmpDetails
{
   public int EmpDepartmentID { get; set; }
   public string empname { get; set; }
}
public class EmpDepartment
{
   public int DepartmentID { get; set; }
   public string depname { get; set; }
}

I have two lists where i will use left outer join Lists are:

List<EmpDepartment> listdepartment = new List<EmpDepartment>();
List<EmpDetails> listempdetails = new List<EmpDetails>();

Inserting data into list listdepartment.

listdepartment.Add(new EmpDepartment() { DepartmentID = 1, depname = "Devep" });
           listdepartment.Add(new EmpDepartment() { DepartmentID = 2, depname = "C#" });
           listdepartment.Add(new EmpDepartment() { DepartmentID = 3, depname = "IOS" });

Inserting data into list listempdetails.

istempdetails.Add(new EmpDetails() {EmpDepartmentID=1,empname="Ruchit" });
        listempdetails.Add(new EmpDetails() { EmpDepartmentID = 2, empname = "Ruchita" });
        listempdetails.Add(new EmpDetails() { EmpDepartmentID = 4, empname = "Ruchita" });

Applying left outer join.

var resultDefaultIfEmpty = from emp in listdepartment
                                  join worker in listempdetails on emp.DepartmentID equals worker.EmpDepartmentID into ResultEmpWorker
                                  from output in ResultEmpWorker.DefaultIfEmpty()
                                  select new
                                  {
                                      EmployeeName = emp.depname,
                                      City = output != null ? output.empname : "Not"
                                  };

Hope you have got idea how to apply left outer join in LINQ.