1. Except as otherwise provided by specific statute, workers who are:
(a) Employed at the site of a public work; and
(b) Necessary in the execution of the contract for the public work,
Ê are deemed to be employed on public works.
2. The Labor Commissioner shall adopt regulations to define the circumstances under which a worker is:
(a) Employed at the site of a public work; and
(b) Necessary in the execution of the contract for the public work.