The age of a minor who desires an employment certificate must be proved by:

1. 1. A certificate of proof of birth issued by the state registrar of vital statistics; or

2. 2. Documentary evidence satisfactory to the labor commissioner, such as a certificate of arrival in the United States issued by the United States immigration officers and showing the age of the child, a passport showing the age of the child, a valid driver's license, a baptismal certificate, or a life insurance policy. Such other satisfactory documentary evidence must have been in existence for at least one year, and in the case of a life insurance policy, for at least four years.