The commissioner shall enforce the provisions of this act, make complaints against persons violating its provisions and prosecute violations of the same.
The commissioner shall have the power and authority, without notice or delay during regular working hours or other reasonable hours within reasonable limits and in a reasonable manner, to enter and inspect any place of employment and all pertinent conditions, structures, machinery, apparatus, devices, equipment and materials and to question privately the owner and any employer or employee.
No person shall obstruct, hinder or delay or interfere with by force or otherwise the performance by the commissioner of any duty under the provisions of this act.