Asking about the circumstances of those who are seeking employment
Question

                I work for a boss who sometimes asks me about some of the people who want to work for him, or who are already working for him – he asks about their attitude and manners, how good they are and how qualified they are. Is it permissible for me to co-operate with him on this matter? Please advise us, may Allaah reward you with good.
Praise be to Allah.It is permissible for you to co-operate with him on the 
          matter, so long as you do your best to be certain of the information 
          that you are giving to him, and you avoid lying or cheating, because 
          if this is done truthfully and sincerely, it is counted as cooperating 
          in righteousness and piety, and as  offering sincere advice to 
          a brother (naseehah). May Allaah help us all.