34 Pa. Code § 17.16
The employer, representative contractor or contractor, distributing materials directly to homeworkers, shall designate some person over 21 years of age, such as a parent, a guardian or homeworkers, in each home where homework is done as his authorized representative in that home, who, together with the employer, representative contractor or contractor is jointly responsible for the carrying out of the act of May 18, 1937 (P. L. 665, No. 176) (43 P. S. §§ 491-1-491-24) or the act of May 13, 1915 (P. L. 286, No. 177) (43 P. S. §§ 41-71) and this chapter. An employer or representative contractor who furnishes materials to a contractor to be distributed to homeworkers when that contractor is violating the provision of the laws or regulations applicable to industrial homework, shall be held jointly responsible with the contractor.
34 Pa. Code § 17.16