GMS Inc. is a professional employer organization. The Company, through its subsidiaries, operates a network of approximately 300 distribution centers with product offerings of wallboard, ceilings, steel framing, and complementary construction products. The Company also operates approximately 100 tool sales, rental, and service centers. Through these operations, the Company provides a selection of building products and solutions for its residential and commercial contractor customer base across the United States and Canada. It offers professional services. It also provides automatic taping and finishing (ATF) tools and related products to the professional drywall finishing industry. It offers various services, such as Online Payroll Services, pay roll tax management, employee recruiting and training services, human resource audit, learning management, unemployment claims management, fleet, management, workplace safety, workers compensation, and workplace noise monitoring.