What you mean, are they stay in a quarters or some dwelling within the factory premises allotted by your Co. ? Are simply walked into the factory along with the employee and stayput in the work place? Non employee is not to be permitted to stay. If there are kids accompanied the employee then kids should be separated and confined to creche only. If they are coming with the employee on occasions like festivals, birthday celebrated in the factory then ,it's a different issue. Not as a routine.