certificate of age

The United States Department of Labor will issue a "certificate of age" if the minor employee's state does not issue them, or if the minor is requested by his or her employer to provide one.

In 1844 a Textile Factory Act modified these extensive inspectoral powers, organizing the service on lines resembling those of our own time, and added provision for certifying surgeons to examine workers under sixteen years of age as to physical fitness for employment and to grant certificates of age and ordinary strength.