C.R.S. § 8-2-111: Penalty for blacklisting.

If any officer or agent of any corporation, company, individual, or other person blacklists, publishes, or causes to be blacklisted or published any employee, mechanic, or laborer discharged by such corporation, company, or individual with the intent and for the purpose of preventing such employee, mechanic, or laborer from engaging in or securing similar or other employment from any other corporation, company, or individual, or in any manner conspires or contrives by correspondence, or otherwise, to prevent such discharged employee from securing employment, commits a class 2 misdemeanor.