Products & Services
About Work4
Work4 is a company reporting $1M-$5M in annual revenue, classified under Human Resources Consulting Services, based in San Francisco, California, United States, operating in Office service and employing 21-50 people.
Its primary NAICS classification is 541612 (Human Resources Consulting Services). Work4 is one of 2,121,238 Industrial & mechanical companies listed in California.
Business Contact Information
- Phone
- +1 (415) 9121511
- Website
- work4labs.com
- linkedin.com/company/work4
- facebook.com/work4labs
- Address
- 735 Market St, San Francisco, California, 94103, United States
Industry & Classification
- Industry
- Industrial & mechanical
- Sector
- Commercial services
- Segment
- Office service
NAICS Codes
- 54Professional, Scientific, and Technical Services
- 5416Management, Scientific, and Technical Consulting Services
- 541612Human Resources Consulting Services
SIC Codes
- 73Business Services
- 736Personnel Supply Services
- 7361
Company Details
- Employees
- 22 (21-50)
- Annual Revenue
- $3.8M ($1M-$5M)
Work4: frequently asked questions
What does Work4 do?
Work4 is a company reporting $1M-$5M in annual revenue, classified under Human Resources Consulting Services, based in San Francisco, California, United States, operating in Office service and employing 21-50 people.
Where is Work4 located?
Work4 is headquartered at 735 Market St, San Francisco, California, 94103, United States.
How many employees does Work4 have?
Work4 has about 22 employees (the 21-50 range).
What is Work4's annual revenue?
Work4's annual revenue is estimated at $3.8M (the $1M-$5M range).
What industry is Work4 in?
Work4 is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 541612 (Human Resources Consulting Services).
How can I contact Work4?
Its website is work4labs.com and its phone number is +1 (415) 9121511.
What companies are similar to Work4?
Other large industrial & mechanical companies in California include State of California, TD SYNNEX Corp, University of California and Ingram Micro Holding Corp.
Largest industrial & mechanical companies in California
Largest companies in California
Largest industrial & mechanical companies
Manufacturing sales in California, 2026
In California, Factur's 2026 study counted 98 manufacturing quotes worth $14.7M and 18 purchase orders over 12 months: 18% of quotes became orders, against 21% nationally. See the California data.
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