NAICS Code 561330: Professional Employer Organizations
National industry
SBA small business size standard: $41.5 million in average annual receipts
Definition
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 remitting employment-related taxes, for some or all of the employees of their clients, and also serve as the employer of those employees for benefits and related purposes.
Government contracts for this service: PSC R699 Other Administrative Support Services
Code facts
- Part of
-
-
56
-
561
-
5613
- 56133
-
5613
-
561
-
56
- Contract awards
- 30 In the last 12 months
- Contract obligations
- $8,320,821 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau, size standards from the SBA and contract spending from SAM.gov/FPDS.
Business activities under NAICS 561330
- Employee leasing services
- Labor leasing services
- PEO (professional employer organizations)
- Professional employer organizations (PEO)
- Staff leasing services
Looking for another activity? Search the NAICS code lookup or browse business activities from A to Z.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $35,426 |
| FY2026 | $4,323,598 |
| FY2025 | $8,320,821 |
| FY2024 | $21,807,212 |
| FY2023 | $15,404,144 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Wits Solutions Inc. | $988,863 | |
| 2 | Interactive Government Holdings, Inc. | $547,293 | |
| 3 | Compass Medical Provider LLC | $488,610 | |
| 4 | Metropolitan Medical LLC | $394,311 | |
| 5 | Myriddian, LLC | $348,824 | |
| 6 | Vergence LLC | $312,883 | |
| 7 | Oban Corporation | $244,582 | |
| 8 | T47 International, Inc. | $141,196 | |
| 9 | Citadel Federal Solutions LLC | $127,320 |
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Army | $3,272,096 | |
| 2 | Department of State | $877,369 | |
| 3 | National Gallery of Art | $394,311 | |
| 4 | Department of the Navy | $76,500 | |
| 5 | Air Force | $60,540 | |
| 6 | Defense Logistics Agency | $19,658 | |
| 7 | Department of Commerce | $13,500 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | R699 Other Administrative Support Services | $1,571,085 | |
| 2 | R499 Other Professional Services | $682,230 | |
| 3 |
U008 Training/ |
$674,613 | |
| 4 | R401 Personal Care Services (includes such services as barber and beauty shop, shoe repairs, tailoring, etc.) | $394,311 | |
| 5 |
R408 Program Management/ |
$375,830 | |
| 6 | Q201 Medical – Managed Healthcare | $244,582 | |
| 7 | R799 Other Management Support Services | $111,773 | |
| 8 | U099 Other Education and Training Services | $76,500 | |
| 9 | R425 Engineering and Technical Services | $60,540 | |
| 10 | R424 Expert Witness | $54,000 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | South Carolina | $988,863 | |
| 2 | Wisconsin | $747,139 | |
| 3 | Virginia | $613,063 | |
| 4 | Idaho | $488,610 | |
| 5 | District of Columbia | $354,365 | |
| 6 | Rhode Island | $312,883 | |
| 7 | Massachusetts | $154,696 | |
| 8 | Maryland | $76,500 | |
| 9 | Texas | $54,000 |
Shares are of everything obligated under NAICS 561330 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 40 more
Latest 50 of 165 listed here. See the rest on GovTribe.
Size standard history
Federal Register rules that named this code
Proposed size standard changes
| Proposed rule | Published | Comments |
|---|---|---|
| Small Business Size Standards: Monetary-Based Industry Size Standards | Closed Oct 21, 2025No final rule found |
From the NAICS codes each rule's amendments to 13 CFR 121.201 name. Rules that print their size standard tables as images aren't listed.
Quick answers
What is NAICS 561330?
NAICS 561330 is Professional Employer Organizations, a national industry in NAICS 56, Administrative and Support and Waste Management and Remediation Services.
What is the NAICS code for labor leasing services?
The NAICS code for labor leasing services is 561330, Professional Employer Organizations.
What is the NAICS code for staff leasing services?
The NAICS code for staff leasing services is 561330, Professional Employer Organizations.
What is the NAICS code for employee leasing services?
The NAICS code for employee leasing services is 561330, Professional Employer Organizations.
When did the size standard for NAICS 561330 last change?
The most recent Federal Register rule on record that names NAICS 561330 in the SBA's size standards is "Small Business Size Standards: Adjustment of Monetary-Based Size Standards, Disadvantage Thresholds, and 8(a) Eligibility Thresholds for Inflation" (87 FR 69118), published Nov 17, 2022 and effective Dec 19, 2022.
How much do federal agencies spend under NAICS 561330?
Federal contracts under NAICS 561330 obligated $8,320,821 in fiscal year 2025 and $49,891,201 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 561330?
The contractors with the most obligated under NAICS 561330 in fiscal years 2026 and 2027 are Wits Solutions Inc. ($988,863); Interactive Government Holdings, Inc. ($547,293); and Compass Medical Provider LLC ($488,610).
Which agencies buy the most under NAICS 561330?
The agencies that obligated the most under NAICS 561330 in fiscal years 2026 and 2027 are Department of the Army ($3,272,096), Department of State ($877,369) and National Gallery of Art ($394,311).
Which PSC codes are used with NAICS 561330?
The PSC codes with the most obligated under NAICS 561330 in fiscal years 2026 and 2027 are R699 Other Administrative Support Services, R499 Other Professional Services and U008 Training/
Where is the work under NAICS 561330 performed?
By place of performance, the states with the most contract obligations under NAICS 561330 over the last 12 months are South Carolina ($988,863), Wisconsin ($747,139) and Virginia ($613,063).
What is the latest contract opportunity under NAICS 561330?
The latest contract opportunity under NAICS 561330 is Temporary Support Services (Carpenter), solicitation from US Embassy Paris (DOS), posted September 21, 2026.
On GovTribe
See everything under NAICS 561330
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