Section 2(3)(b) in The Inter-State Migrant Workmen (Regulation Of Employment And Conditions Of Service) Act, 1979
(b)“contractor”, in relation to an establishment, means a person who undertakes (whether as an independent contractor, agent, employee or otherwise) to produce a given result for the establishment, other than mere supply of goods or articles of manufacture to such establishment, by the employment of workmen or to supply workmen to the establishment, and includes a sub-contractor, Khatadar, Sardar, agent or any other person, by whatever name called, who recruits or employs workmen;