Code of Federal Regulations Title 29. Labor § 29.4.115 Exemptions and exceptions, generally

(1) Any contract of the United States or District of Columbia for construction, alteration, and/or repair, including painting and decorating of public buildings or public works;

(2) Any work required to be done in accordance with the provisions of the Walsh–Healey Public Contracts Act (49 Stat. 2036);

(3) Any contract for the carriage of freight or personnel by vessel, airplane, bus, truck, express, railway line, or oil or gas pipeline where published tariff rates are in effect;

(4) Any contract for the furnishing of services by radio, telephone, telegraph, or cable companies, subject to the Communications Act of 1934;

(5) Any contract for public utility services, including electric light and power, water, steam, and gas;

(6) Any employment contract providing for direct services to a Federal agency by an individual or individuals;

(7) Any contract with the Post Office Department, (now the U.S. Postal Service) the principal purpose of which is the operation of postal contract stations.