Maryland Code, Correctional Services § 3-516

(1) if they are produced or provided by an individual on parole or in a work release program;

(2) if the sale is made to a charitable, civic, educational, fraternal, or religious agency, association, or institution for its own use and not for resale within 1 year of the purchase;

(3) to a person for national defense purposes if not prohibited by an act of Congress;

(4) if they are surplus goods remaining after meeting the forecasted requirements of units of State government and political subdivisions and the goods remain unsold 1 year after being produced;

(5) for use by a contractor or subcontractor in performance of a contract with a unit of State government or any other governmental unit in the State;

(6) as allowed under the Private Sector/Prison Industry Enhancement Certification Program of the United States Department of Justice, Bureau of Justice Assistance; or

(7) if they are related to the preparation or distribution of food or services related to agriculture or seafood processing, when the following conditions are met:

(c)(1) The Secretary and the Secretary of Labor shall adopt regulations that specify how to determine the need for incarcerated individual labor under subsection (b)(7) of this section.

(2) Wages paid to incarcerated individuals under subsection (b)(7) of this section may not be less than wages paid for similar work in the private sector of the same locality as determined by the Secretary of Labor.

(3) Incarcerated individual labor under subsection (b)(7) of this section applies only to incarcerated individuals at the minimum, prerelease, and work release security levels.