# NAICS 561330: Professional Employer Organizations

Breadcrumb: [NAICS codes](https://bidrover.com/naics) › [561330 Professional Employer Organizations](https://bidrover.com/naics/561330)

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…

- NAICS code: 561330
- Title: Professional Employer Organizations
- Sector: 56 Administrative and Support and Waste Management and Remediation Services
- Subsector: 561 Administrative and Support Services
- Industry group: 5613 Employment Services
- SBA size standard: $41.5 million average annual receipts
- Open bids on BidRover: 0

## Open bids (0)

No open bids cite this code right now.

## Frequently asked questions

### What is NAICS code 561330?

NAICS 561330 is "Professional Employer Organizations" in the 2022 North American Industry Classification System, in sector 56 (Administrative and Support and Waste Management and Remediation Services). 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…

### What is the SBA size standard for NAICS 561330?

A business is small under NAICS 561330 at or below $41.5 million average annual receipts, including affiliates (13 CFR 121.201). Confirm the standard named in each solicitation.

### How many government bids are open under NAICS 561330?

No open bid in BidRover cites NAICS 561330 right now. Many state and local notices do not list a NAICS code, so a keyword alert for this work catches more of them.

### How do I get alerts for NAICS 561330 bids?

Save an alert on this page. A free account gets new matching bids by weekly email; the Team plan ($19/mo) sends daily alerts with match scores, the buyer, source link and documents.

## Related NAICS codes

- [561320 Temporary Help Services](https://bidrover.com/naics/561320)
- [561311 Employment Placement Agencies](https://bidrover.com/naics/561311)
- [561312 Executive Search Services](https://bidrover.com/naics/561312)

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Code titles and definitions: U.S. Census Bureau, North American Industry Classification System (NAICS), 2022 (https://www.census.gov/naics/). Size standards: U.S. Small Business Administration, Small Business Size Standards, 13 CFR 121.201, eCFR text current as of 2026-10-21 (https://www.ecfr.gov/current/title-13/section-121.201).

BidRover lists bids from official public sources. It is not an issuing authority; confirm the NAICS code and size standard named in each solicitation.