Section 2(1)(g) in The Contract Labour (Regulation and Abolition) Act, 1970
(g)"principal employer" means—(i)in relation to any office or department of the Government or a local authority, the head of that office or department or such other officer as the Government or the local authority, as the case may be, may specify in this behalf,(ii)in a factory, the owner or occupier of the factory and where a person has been named as the manager of the factory under the Factories Act, 1948 (63 of 1948), the person so named,(iii)in a mine, the owner or agent of the mine and where a person has been named as the manager of the mine, the person so named,(iv)in any other establishment, any person responsible for the supervision and control of the establishment.