No, it is not necessary to obtain building wise registration as a principal employer under the Contract Labour (R&A) Act, 1970. A single registration is sufficient for all the establishments of a principal employer, irrespective of the number of buildings or premises they may have.
The Act defines a principal employer as "any person who, for the purposes of any work, employs contract labour in an establishment". The term "establishment" is defined as "any place where any industry, trade, business, manufacture or occupation is carried on".
Therefore, if a principal employer has multiple establishments, they can obtain a single registration for all of them. However, the registration must be obtained from the Assistant Labour Commissioner (ALC) in whose jurisdiction the principal employer's main office is located.
The ALC will verify the application and, if it is found to be in order, will issue a certificate of registration to the principal employer. The certificate of registration will be valid for a period of three years and can be renewed for a further period of three years.
It is important to note that the principal employer is required to comply with all the provisions of the Contract Labour (R&A) Act, even if they have obtained a single registration for all their establishments. These provisions include the following:
The principal employer must ensure that the contract labour is not employed in any hazardous or unhealthy work.
The principal employer must provide the contract labour with the same facilities as are provided to their own employees.
The principal employer must pay the contract labour at least the minimum wages prescribed by the government.
The principal employer must maintain a register of all the contract labour employed by them.
The principal employer is also required to submit an annual return to the ALC in respect of the contract labour employed by them.
I hope this clarifies your query. Please let me know if you have any other questions.