Section 3223. Duties of employers

The employer of any minor required to
  have an employment certificate:
    1. Shall satisfy himself  that  the  minor  presenting  an  employment
  certificate is in fact the minor named therein.
    2.  Shall  before  employment begins, file at the place of the minor's
  employment such certificate so that it may be readily accessible to  any
  authorized person to examine such document.
    3.  Shall,  upon  termination  of  the  minor's employment, return the
  employment certificate to the minor.