Group Management Services, Inc.

Human Resources ServicesOhio, United States501-1000 Employees

GMS is a midsize human resources services provider based in Richfield, Ohio, offering payroll, HR management, risk mitigation, and benefits administration to firms nationwide. It operates as a national certified professional employer organization, delivering back-office HR and compliance support to small and midsize businesses across the United States. In March 2026, GMS announced the appointment of Beth Harhai as Chief Revenue Officer, signaling an expanded emphasis on client engagement and revenue growth. The company serves nearly 3,000 client businesses representing more than 50,000 employees, helping owners manage safeguards, claims defense, and compliance so they can focus on core operations. By consolidating HR tasks such as recruiting, onboarding, payroll processing, and benefits administration under the GMS umbrella, the organization aims to provide the buying power of a large firm to smaller businesses and support cost-effective benefits and streamlined risk management. Based in Richfield, Ohio, GMS operates across the United States, positioning itself within the HR services industry as a provider that blends administrative support with risk and benefits management.

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