Factories Act, 1948 (Extracts)
Section 2 .Interpretation. -In this Act, unless there is anything repugnant in the subject or context -

(e) "day" means a period of twenty-four hours beginning at midnight;

(g) "power" means electrical energy, or any other form of energy which is mechanically transmitted and is not generated by human or animal agency;

(j) "machinery" includes prime mover, transmission machinery and all other appliances whereby power is generated, transformed, transmitted or applied;

(k) "manufacturing process" means any process for -(i) making, altering, repairing, ornamenting, finishing, packing, oiling, washing, cleaning, breaking, up, demolishing, or otherwise treating or adapting any article or substance with a view to its use, sale, transport, delivery, or disposal, or

(ii) pumping oil, water, sewage or any other substance;

(iii) generating, transforming or transmitting power, or

(iv) composing types for. printing, printing by letter press, lithography, photogravure or other similar process or book binding, or

(v) constructing, reconstructing, repairing, refitting, finishing, or breaking up ships or vessels; of

(vi) preserving or storing any article in cold storage;

(1) "worker" means a person 4 employed directly or by or through any agency (including a contractor) with or without the knowledge of the principal employer whether for remuneration or not manufacturing process, or in cleaning any part of the machinery or premises used for a manufacturing process, or in any other kind of work incidental to, or, connected with, the manufacturing process, or subject to the manufacturing process but does not include any member of the armed forces of the Union;

(m) "factory" means any premises including the precincts thereof-(i) whereon ten or more workers are working, or were working on any day of the preceding twelve months, and in any part of which a manufacturing process is being carried on with the aid of power, or is ordinarily so carried on, or

(ii) whereon twenty or more workers are working, or were working on any day of the preceding twelve months, and in any part of which a manufacturing process is being carried on without the aid of power, or is ordinarily so carried on,

but does not include a mine subject to the operation of the Mines Act, 1952 (35 of 1952), a mobile unit belonging to the armed forces of the Union, a railway running shed or a hotel or restaurant or eating place.

Explanation I-For computing the number of workers for the purposes o this clause all the workers in different groups and relays in a day shall be taken into account;

Explanation II-For the purposes of this clause, the mere fact that an Electronic Data Processing Unit or a Computer Unit is installed in any premises o part thereof, shall not be construed to make it a factory if no manufacturing process: is being carried on in such premises or part thereof;

(r) Where the work of the same kind is carried out by two or more sets o workers working, during, different periods of the day, each of such set is called a "group" or "relay" and each of such period is called a "shift".