Bugs and Suggestions

public class SysAdmin : Employee
{

     public override void DoWork(IWorkItem workItem)
     {
          if (workItem.User.Type == UserType.NoLearn){
             throw new NoIWillNotFixYourComputerException(new Luser(workItem.User));
          }else{
               base.DoWork(workItem);
          }
     }

}