Colo. Rev. Stat. § 8-2-118

Colo. Rev. Stat. § 8-2-118 – Payment for Medical Examination

(1) It is unlawful for any employer, as defined in subsection (2) of this section, to require any employee or applicant for employment to pay the cost of a medical examination or the cost of furnishing any records required by the employer as a condition of employment, except those records necessary to support the applicant's statements in the application for employment.

(2) "Employer", as used in this section, means an individual, a partnership, an association, a corporation, a legal representative, trustee, receiver, trustee in bankruptcy, and any common carrier by rail, motor, water, air, or express company doing business in or operating within the state.

(3) "Employee", as used in this section, means every person who may be permitted, required, or directed by any employer, as defined in subsection (2) of this section, in consideration of direct or indirect gain or profit, to engage in any employment.

(4) Any employer who violates the provisions of this section is liable to a penalty of not more than one hundred dollars for each violation. It is the duty of the director of the division of labor to enforce this section.

(5) (a) The director of the division of labor shall enforce this section as it applies to an individual, a partnership, an association, a corporation, a legal representative, trustee, receiver, or trustee in bankruptcy doing business in or operating within the state.
(b) The public utilities commission shall enforce this section as it applies to any common carrier by rail, motor, water, air, or express company doing business in or operating within the state.
(c) Nothing in this subsection (5) shall be construed as applying to irrigation ditch and water companies