Section 2(m) of the Factories Act, 1948 defines 'factory' as any premises
Where 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 the power, or is ordinarily so carried on, or
Where 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 with the aid of the power, or is ordinarily so carried on, but does not include
Mines subject to the operation of the Mines Act,
A mobile unit belonging to the armed forces of the Union,
Railway running shed or a hotel,restaurant or eating place.