Wyo. Stat. § 27-6-107
It shall be unlawful for any person, firm or corporation to employ, permit or allow any child under the age of fourteen (14) years to work at any gainful occupation except farm, domestic or lawn and yard service. To ensure that a child is of proper age to be employed under this section, every person, firm or corporation employing a child under sixteen (16) years of age shall procure and have on file where the child is employed, a form of proof of age as required under W.S. 27-6-108; provided however that under no circumstances shall any child under sixteen (16) years of age be employed in any occupation listed in W.S. 27-6-112 or in any occupation declared by the department of workforce services to be hazardous for children under sixteen (16) years of age.
W.S. 27-6-107