(1) An inspector may, for the purpose of enforcing the provisions of this Part, do all or any of the following things, that is to say: -
(a) enter at all reasonable times any premises where he has reasonable grounds for believing that any workers to whom an employment regulation order applies are employed,
(b) require the production of wages sheets or other records of remuneration kept by an employer and any such records as are required by this Part to be kept by employers, and inspect and examine those sheets or records and copy any material part thereof,
(c) examine with respect to any matters under this Part any person whom he has reasonable grounds for believing to be or have been a worker to whom, an employment regulation order applies or the employer of any such worker and require such person or employer to answer such questions (other than questions tending to incriminate such person) as such inspector may put touching such matters and to sign a declaration of the truth of the a
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