Okla. Stat. tit. 59, § 59-1850.9: Apprentice registration

A. The Construction Industries Board, upon proper application

and payment of an apprentice registration fee, shall register as a

mechanical apprentice and issue a certificate of such registration

to any person who furnishes satisfactory proof to the Board that the

applicant is:

1. Sixteen (16) years of age or older; and

2. Enrolled in a school or training course for mechanical

apprentices recognized by the Board or has arranged for employment

as a mechanical apprentice with a licensed mechanical contractor.

B. Apprentice registration certificates shall expire one (1)

year after date of registration, at which time the apprentice may

reregister and receive, upon payment of the apprentice registration

renewal fee, a renewal certificate.