(a) No employer, or representative contractor, or contractor, shall deliver, or cause to be delivered, any articles or materials to be manufactured by any home-worker, unless there has been conspicuously affixed to each article or material a label, or other mark of identification, bearing the employer's or representative contractor's name and address, printed or written legibly in English; but if the articles or materials are of such a nature that they cannot be individually so labeled or identified, then the employer or representative contractor shall conspicuously label, in like manner, the package, or other container in which such articles or materials are delivered, or are to be kept, while in the possession of the home-worker.

(b) Every article manufactured in whole or in part by industrial homework which is offered for sale, wholesale and retail, shall bear a conspicuous label stating in clearly legible type that it has been manufactured by industrial homework. It shall be the duty of the department to prescribe regulations concerning the nature and placement of labels on such articles.