# NAICS 561330: Professional Employer Organizations

The SBA size standard for NAICS 561330 is $41,500,000 in average annual receipts (13 CFR 121.201).

| Field | Value |
| --- | --- |
| Code | 561330 |
| Title | Professional Employer Organizations |
| Level | 6 |
| Parent | 56133 |
| Size standard | $41,500,000 in average annual receipts |
| Footnote | - |

## Description

This industry comprises establishments primarily engaged in providing human resources and human resource management services to client businesses and households. Establishments in this industry operate in a co-employment relationship with client businesses or organizations and are specialized in performing a wide range of human resource and personnel management duties, such as payroll, payroll tax, benefits administration, workers' compensation, unemployment, and human resource administration. Professional employer organizations (PEOs) are responsible for payroll, including withholding and rem

## Sources

- Census NAICS: https://www.census.gov/naics/
- SBA size standards: https://www.sba.gov/document/support-table-size-standards

## API and MCP

- REST: GET https://samgovapi.io/api/v1/naics/561330/size-standard?revenue_usd=...
- MCP tools: naics_lookup, size_standard_check

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