DataGridView Add Multiple Rows for List in List Object

I have two classes Employee and Department as follows

class Employee
{
    public string ID {get;set;}
    public string Name {get;set;}
    public List<Departments> AssociatedDepartment {get;set;}
}

class Department
{
   public string DepartmentID {get;set;}
   public string DepartmentName {get;set;}
}

I am binding a DataGridView with List<Employee>. It is showing list of Employees but not Department of the employees.

List<Employee> employeeList = GetEmployeeList();

if (employeeList != null)
{
     grdResponse.DataSource = employeeList;
}

Now it is showing following data.

ID  Name  
---------
1   Joe  
2   Tim

What should I do to get following?

ID  Name Department 
--------------------
1   Joe  Software
1   Joe  Management
2   Tim  Hardware