A person who enters into any contract, combination, conspiracy or other act in restraint of trade or commerce which is unlawful under title 44, chapter 10, article 1 is guilty of a class 4 felony if the contract, combination, conspiracy or other unlawful act in restraint of trade or commerce involves 1) A contract between a governmental agency and a person for the purchase of equipment, labor or materials or for the construction or repair of highways, buildings or structures, or additions or alterations to highways, buildings or structures or 2) A subcontract with a contractor or proposed contractor for a governmental agency for the purchase of equipment, labor or materials or for the construction or repair of highways, buildings or structures, or additions or alterations to highways, buildings or structures.