Industries › NAICS 541
Professional, Scientific, and Technical Services
NAICS subsector 541. OSHA inspections, injury summaries, Wage and Hour cases and OFLC filings for employers classified in the subsector.
Professional, Scientific, and Technical Services (NAICS 541) accounts for 7,494 OSHA inspections since 2016, 1% of all inspections, with $17M in current penalties ($2,237 per inspection; all industries $3,754).
Wage and Hour Division cases concluded in the industry number 10,326, with $279M in back wages agreed to pay. Employers in the industry filed 462,390 labor condition applications and 76,619 PERM applications in the fiscal years covered.
4,783 establishments reported 2025 injury summaries: a total recordable case rate of 1.2 per 100 full-time workers, below the 3.5 across all reporting establishments; the median reporting establishment has a rate of 0.0 (quartiles 0.0–1.6).
All employers in this subsector
All employers in Professional, Scientific, and Technical Services: 14,046 records. The A to Z list names every employer in the subsector that has a page.
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OSHA inspections and citations
Citations may be contested; the status shown reflects the record at the data date. Enforcement data through 14 Sep 2026.
| Measure | NAICS 541 | All industries |
|---|---|---|
| Citations per inspection | 1.3 | 1.9 |
| Current penalty per inspection | $2,237 | $3,754 |
| Share of all inspections | 1% | 100% |
Most-cited standards
| Standard | Subject | Citations |
|---|---|---|
| 1910.1200 | Hazard communication | 835 |
| 1910.134 | Respiratory protection | 431 |
| 1910.132 | Personal protective equipment, general requirements | 261 |
| 1910.303 | Electrical, general requirements | 237 |
| 1910.147 | The control of hazardous energy (lockout/tagout) | 228 |
| 1910.178 | Powered industrial trucks | 219 |
| 1910.157 | Portable fire extinguishers | 205 |
| 1910.305 | Electrical, wiring methods, components and equipment | 201 |
| 1910.37 | Maintenance, safeguards and operational features for exit routes | 185 |
| OAR | — | 173 |
Employers with the most inspections
| Employer | City | Inspections |
|---|---|---|
| Express Employment Professionals | Yuba City | 27 |
| Onin Staffing, LLC | Birmingham | 18 |
| National Oceanic and Atmospheric Administration | Juneau | 17 |
| Roush Industries | Livonia | 14 |
| Gerber Payroll Services Inc | Port Orchard | 12 |
| National Oceanic and Atmospheric Administration (Noaa) | Newport | 11 |
| Superior Signs LLC | Henrico | 11 |
| Elite Environmental Services LLC | Yakima | 10 |
| Biagi Bros Inc. | Napa | 8 |
| Coast to Coast General Contractors Inc | Hollywood | 8 |
| Froehling & Robertson, Inc. | Richmond | 8 |
| Asrc Energy Services | Prudhoe Bay | 7 |
| Blueprint Capital Services LLC | Seattle | 7 |
| Exel Inc. | Livermore | 7 |
| KUKA Systems North America LLC | Sterling Heights | 7 |
| Moore Sign Corp. | Henrico | 7 |
| Sea Con LLC | Seattle | 7 |
| V.I Department of Justice--St Croix | Christiansted | 7 |
| Vca Animal Hospitals, Inc. | Sacramento | 7 |
| Aerotek, Inc. | Farmer City | 6 |
The list names employers that have a page on this site (organisations above the size floor); the totals above count every record in the files.
Injuries Form 300A summaries
Establishments submit their own Form 300A summaries; OSHA publishes the data as submitted and does not verify it. Rates are per 100 full-time workers.
Injury-rate distribution, 2025
Total recordable case rates across 3,249 establishments with at least 20,000 hours worked; the pooled rate uses all 4,783 reporting establishments' hours and cases.
| Year | Establishments | Employees | Recordable cases | TRC rate | DART rate | Median establishment |
|---|---|---|---|---|---|---|
| 2023 | 4,992 | 719,162 | 6,908 | 1.2 | 0.5 | 0.0 |
| 2024 | 4,978 | 744,214 | 6,337 | 1.1 | 0.5 | 0.0 |
| 2025 | 4,783 | 644,730 | 6,151 | 1.2 | 0.5 | 0.0 |
Labor Wage and Hour Division
Concluded compliance actions since fiscal year 2005; amounts are back wages the employer agreed to pay, as recorded at case conclusion. Data through 15 Jun 2026.
Acts
| Act | Violations | Back wages |
|---|---|---|
| Service Contract Act | 46,945 | $100M |
| Fair Labor Standards Act | 109,340 | $96M |
| H-1B provisions | 20,145 | $75M |
| Davis-Bacon and Related Acts | 1,777 | $2.2M |
| H-2B provisions | 1,657 | $1.4M |
| Family and Medical Leave Act | 19,820 | $632K |
| H-2A provisions | 317 | $161K |
| Consumer Credit Protection Act | 7 | $19K |
| Migrant and Seasonal Agricultural Worker Protection Act | 67 | $6,120 |
| Employee Polygraph Protection Act | 64 | $2,500 |
Employers with the largest back wages
| Employer | City | Back wages |
|---|---|---|
| Westat | Rockville | $4,257,469 |
| Peregrine Technical Solutions, LLC | Yorktown | $2,948,662 |
| 22nd Century Technologies, Inc. | Somerset | $2,657,804 |
| Computech Corporation | Detroit | $2,261,955 |
| ECS Federal, LLC | Fairfax | $1,801,646 |
| Clean Harbors Environmental Services, Inc. | Norwell | $1,707,457 |
| Apex Systems, LLC | Glen Allen | $1,470,490 |
| Smartsoft International Inc. | Johns Creek | $997,733 |
| Linxx Global Solutions LLC | Virginia Beach | $963,286 |
| General Atomics | Poway | $951,457 |
| Peri Software Solutions Inc. | Newark | $635,417 |
| Kira, Inc. | Boulder | $631,775 |
| Diligent Group LLC | Sterling | $627,132 |
| Cognizant Technology Solutions | Teaneck | $555,929 |
| Intuit Inc. | Mountain View | $555,185 |
The list names employers that have a page on this site (organisations above the size floor); the totals above count every record in the files.
Immigration OFLC labor condition applications and PERM
Employer-specific case information was provided to OFLC by employers who submitted foreign labor certification applications. These are not employer responses to the Bureau of Labor Statistics' survey. Data through 30 Jun 2026.
H-1B applications by fiscal year
PERM applications by fiscal year
Employers with the most H-1B applications
| Employer | City | Applications |
|---|---|---|
| Cognizant Technology Solutions US Corp | College Station | 16,918 |
| Google LLC | Mountain View | 16,421 |
| Ernst & Young U.S. LLP | Secaucus | 15,846 |
| Deloitte Consulting LLP | Philadelphia | 11,046 |
| Tata Consultancy Services Limited | Rockville | 10,806 |
| Capgemini America Inc | Chicago | 4,483 |
| Accenture LLP | Chicago | 4,409 |
| Compunnel Software Group, Inc | Princeton | 4,225 |
| IBM Corporation | Durham | 4,139 |
| Wipro Limited | East Brunswick | 3,931 |
| LTIMindtree Limited | Edison | 3,803 |
| Mphasis Corporation | New York | 2,803 |
| Adobe Inc. | San Jose | 2,234 |
| Pricewaterhousecoopers Advisory Services LLC | Tampa | 1,977 |
| Tech Mahindra (Americas), Inc | Bedminster | 1,943 |
The list names employers that have a page on this site (organisations above the size floor); the totals above count every record in the files.
Questions and answers
Which employers in Professional, Scientific, and Technical Services have the most OSHA inspections?
Express Employment Professionals (27), Onin Staffing, LLC (18), National Oceanic and Atmospheric Administration (17)
What is the injury rate in Professional, Scientific, and Technical Services?
Establishments reporting for 2025 had a pooled total recordable case rate of 1.2 per 100 full-time workers; the median reporting establishment's rate is 0.0 with quartiles 0.0 to 1.6.
How many H-1B applications come from Professional, Scientific, and Technical Services?
462,390 labor condition applications in fiscal years 2025–2026 and 76,619 PERM applications.
How much in back wages did the Wage and Hour Division find due in Professional, Scientific, and Technical Services?
$278,822,992 agreed to pay across 10,326 concluded cases since fiscal year 2005.
Industry is the NAICS code on each record (the most common code where an employer's sources differ), grouped at the three-digit subsector. Sources: DOL enforcement data, OSHA ITA, OFLC disclosure data; see data sources and methodology.