An administrative services organization (ASO) is an organization that provides outsourced solutions to meet the administrative and HR needs of the client, with the client retaining all employment-related risks and liabilities.[1] The term ASO was established by the PEO industry in the late 1990s in order to distinguish between selective administrative support and full-scale PEO services.[2] The principal difference between the two types of service is that, in an ASO arrangement, the employer remains the employer of record for tax purposes.[3] Ultimately, with this structure, tax and insurance filings are done through the administrative firm, but under the client company's employer identification number. All W-2 and workers' compensation policies remain the responsibility of the employer and not the administrative firm.[4]
Some of the more common administrative services offered are payroll processing, payroll administration, benefits administration, and corporate benefits.
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