Section 43(1)(a) in The Buildings And Other Construction Workers (Regulation Of Employment And Conditions Of Service) Act, 1996
(a)enter, at all reasonable hours, with such assistants (if any) being persons in the service of the Government or any local or other public authority as he thinks fit, any premises or place where building or other construction work is carried on, for the purpose of examining any register or record or notices required to be kept or exhibited by or under this Act, and require the production thereof for inspection;