Small business heart, big business strength. By providing payroll, benefits, and HR services and assisting with compliance issues under state and federal law, PEOs allow small businesses to improve productivity and profitability, to focus on their core mission, and to grow.According to a recent study by noted economists Laurie Bassi and Dan McMurrer, small businesses that use PEOs grow 7 to 9 percent faster, have 10 to 14 percent lower employee turnover, and are 50 percent less likely to go out of business.Through a PEO, the employees of small businesses gain access to big-business employee benefits such as: 401(k) plans; health, dental, life, and other insurance; dependent care; and other benefits they might not typically receive as employees of a small company.