Section 4(3)(a) in The Punjab State Warehousing Corporation Staff (Conditions of Service) Group C and Group D (Service) Regulations, 2002
(a)A certificate of character from Principal Academic Officer of the University, College, School or Institution last attended if any, and similar certificates from two responsible persons not being his relatives who are well acquainted with him in his private life and are unconnected with his University, College, School or Institution; and