I work as a contract labourer in Kolkata and get no paid leave or PF, what are my rights?

Contract labour is regulated by the Contract Labour (Regulation and Abolition) Act, 1970, and the West Bengal Premises Tenancy Act 1997 rules, which apply to establishments in Kolkata employing 20 or more contract labourers. The principal employer and the contractor are jointly and severally liable for ensuring payment of wages, PF, ESI, and other statutory benefits. The Calcutta High Court has held that contract labour performing core activities of the establishment cannot be treated differently from regular workmen for the purpose of welfare measures. You can file a complaint with the Labour Commissioner if the contractor fails to provide canteen, rest room, first aid, or weekly off. The state government may prohibit contract labour in specific operations through notification. The contractor must obtain a licence and the principal employer must register the establishment.