Insperity handles the payroll so you don't have to. The company provides an array of human resources services to small and midsized companies in the US. As a PEO (professional employer organization), Insperity offers payroll and benefits administration, workers' compensation programs, and personnel records management through its flagship Workforce Optimization product. It serves some 100,000 businesses with a combined 2 million employees. It also offers performance and expense management, employment screening, recruiting, and organizational planning services. Most of its client companies are engaged in the administration, financial, manufacturing, and computer services industries.