Hewitt Associates Inc. says its has agreed to buy RealLife HR, an employee benefits management firm catering to mid-sized employers.

Hewitt, Lincolnshire, Ill., a human resources consultant and administrator, would acquire RealLife HR, Hunt Valley, Md., for an undisclosed price. It expects to complete the deal by the end of August.

RealLife HR uses proprietary software to run benefits services for employers with fewer than 15,000 employees and retirees. Its has 35 clients, including Magellan Health Systems, Bombardier, Adidas, US Airways and the North Carolina Office of State Personnel.