Okla. Stat. tit. 57, § 57-218: Expense of prisoners

The Department of Corrections may contract with any requesting

public agency to provide inmate labor for public works projects.

The Department of Corrections shall promulgate and adopt rules which

may require the requesting agency for the public works project to

pay up to the base cost plus ten percent (10%), on a monthly

billing. The rules shall provide guidelines which establish the

criteria for how said charges are determined and the amounts the

agencies are to be charged. The requesting agency shall furnish all

tools and materials, unless otherwise agreed upon, necessary in the

performance of said public works project. The prisoner, while

assigned on said public works project, shall, for the purpose of

punishment for escape, be deemed to be on a trusty status and shall

be under the custody and control of the Department of Corrections.