Section 2(3) in The West Bengal Mazdoor, Tindal, Loader, Godownman And Other Workers (Regulation Of Employment And Welfare) Act, 1981
(3)"contractor" in relation to an unprotected worker means a person who undertakes to execute any work for an establishment by engaging such worker on hire or otherwise, or who supplies such worker either in group or gang or as individual, and includes a sub-contractor, an agent, a sardar or a munshi;
