Tandem HR is a professional employer organization, or PEO, that provides small and medium-size businesses (SMBs) with full-service HR solutions tailored by industry. As the largest privately-held Midwest PEO with offices nationwide, we empower companies to focus on what matters most—growing their business. Our clients range from small to medium sized businesses across the country who count on us to deliver best-in-class HR solutions and hands-on expertise to help them navigate the complex HR landscape with confidence.