The regulations in this part are to be followed when:
    
    
        
        (a) 
         NSF is owed a debt by an individual who is a current employee of the NSF; or
     
    
        
        (b) 
         NSF is owed a debt by an individual currently employed by another Federal agency; or
     
    
        
        (c) 
         NSF employs an individual who owes a debt to another Federal agency.