hours and other conditions and practices of employment in any industry subject to this Act, and may enter and inspect such places and such records (and make such transcriptions thereof) at reasonable times during regular business hours, not including lunch time at a restaurant, question such employees, and investigate such facts, conditions, practices or matters as he may deem necessary or appropriate to determine whether any person has violated any provision of this Act, or which may aid in the enforcement of this Act.

statements and reports in writing, including sworn statements, at such times as the Director may deem necessary, of the wages, hours, names, addresses, and other information pertaining to his employees as he may deem necessary for the enforcement of this Act.

of witnesses and the production of all books, records, and other evidence relative to a matter under investigation or hearing. The subpoena shall be signed and issued by the Director or his or her authorized representative. If a person fails to comply with any subpoena lawfully issued under this Section or a witness refuses to produce evidence or testify to any matter regarding which he or she may be lawfully interrogated, the court may, upon application of the Director or his or her authorized representative, compel obedience by proceedings for contempt.

subject to this Act to determine compliance with this Act.