Fourth PEO provides a wide range of HR services, including benefits, payroll, compliance, and administrative support for businesses of various sizes. Businesses partnering with Fourth's services gain advantages like economies of scale, shared liability and risk management, and the support of a dedicated team of HR specialists who handle HR, payroll, and employee benefits administration. This collaboration enables companies to offload the administrative burdens of payroll and human resources, leading to cost savings through economies of scale.