Which organization regulates the use of labor laws and safety in contractor businesses?

The Occupational Safety and Health Administration (OSHA) is the organization responsible for ensuring safe and healthy working conditions for workers by enforcing labor laws related to workplace safety. OSHA develops and promotes standards, conducts inspections, and provides training and education to prevent workplace injuries and illnesses, particularly in industries such as construction where risks can be significant.

For contractor businesses, complying with OSHA regulations is crucial not only for the safety of workers but also for legal compliance, avoiding fines, and promoting a culture of safety. This oversight includes regulations regarding equipment safety, hazardous materials, and worker training requirements.

The other organizations listed serve distinct functions unrelated to labor laws and safety standards for contractors. The Environmental Protection Agency (EPA) oversees environmental regulations; the Division of Professional and Occupational Licenses (DOPL) handles licensing for various trades and professions; and the Internal Revenue Service (IRS) focuses on tax collection and tax law enforcement. Therefore, their roles do not encompass the specific safety and health regulations pertinent to contractor businesses, making OSHA the appropriate answer.