Paychex serves businesses in the United States, Germany, Denmark, Norway, and Sweden. The company supports approximately 670,000 payroll clients as of May 31, 2019, across more than 100 U.S. locations, and pays one out of every 12 American private-sector employees. Paychex offers an ever-growing variety of payroll and human resource products and services that help clients do what they do best — run their business