Section 2(15) in The West Bengal Mazdoor, Tindal, Loader, Godownman And Other Workers (Regulation Of Employment And Welfare) Act, 1981
(15)"worker" means a person engaged directly or through any agency, whether for wages or not, to do any skilled or unskilled manual, supervisory or clerical work in any scheduled employment, and includes any person not employed by any employer or contractor, but working with the permission of, or under an agreement with, such employer or contractor, but does not include any member of the family of an employer;
