Barrett Business Services, Inc. (BBSI) delivers a range of business management solutions specifically designed for small and mid-sized enterprises across the United States. The company has developed a proprietary management platform that seamlessly integrates a strategic, knowledge-based approach, typically found in management consulting, with the practical tools and capabilities characteristic of the human resource outsourcing sector. Among its core offerings are professional employer services, through which BBSI establishes a co-employment relationship via a client services agreement.