How many employees work at Clean Harbors?
Clean Harbors, Inc. (CLH) has approximately 22,119 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Clean Harbors’s total headcount has grown 5.3% from 21,011 employees in 2023 to 22,119 in 2026.
Is Clean Harbors hiring right now?
Yes, Clean Harbors is actively hiring. Clean Harbors had 2,443 active job postings in 2026, a 15.1% increase from 2025 — see job openings & hiring trends.
About Clean Harbors’s Workforce
Clean Harbors, Inc. (CLH) is an Environmental Services company that employs 22,119 people worldwide as of March 2026. It is the 2nd-largest by headcount among its peers. Founded in 1980, the company is headquartered in Norwell, Massachusetts and trades on the New York Stock Exchange.
Clean Harbors's workforce has grown 5.3% from 2023 to 2026, up 0.3% year over year in 2026. Its workforce is concentrated most in North America (71.1%), followed by South Asia (24.1%) and Sub-Saharan Africa (1.6%).
Clean Harbors's functional groups are Finance and Operations (41.7%), Engineering (31.8%), and Sales and Marketing (26.5%). The average salary is $55,713, ranging from a median of $61,000 in North America to $7,000 in South Asia, down 1.4% year over year in 2026.
Clean Harbors's active job postings rose 15.1% in 2026 to 2,443, with new postings per month cooling from 2,562 in 2023 to 1,068 in 2026. Overall employee sentiment is negative and declining.
Sourced from Revelio Labs workforce data.
- Ticker
- New York Stock Exchange: CLH
- Headquarters
- Norwell, Massachusetts
- Founded
- 1980
- Industry
- Environmental Services
- Employees
- 22,119
- YoY
- +0.3% (+95)
As of March 2026
Clean Harbors workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Clean Harbors. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsClean Harbors Annual Employee Count (2023-2026)
- Clean Harbors had 22,119 employees in 2026, a 0.3% increase (+95) from 2025.
- Clean Harbors had 22,167 employees in 2025, a 0.8% increase (+216) from 2024.
- Clean Harbors had 21,951 employees in 2024, a 0% no change (+108) from 2023.
- Clean Harbors had 21,843 employees in 2023, a 3.6% increase (+1,174) from 2022.
Clean Harbors's total workforce has grown from 21,011 employees in 2023 to 22,119 in 2026.
Clean Harbors, Inc. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 22,119 | +95 | +0.3% |
| 2025 | Q4 | 22,167 | +216 | +0.8% |
| 2025 | Q3 | 22,186 | +252 | +0.8% |
| 2025 | Q2 | 22,098 | +226 | +0.8% |
| 2025 | Q1 | 22,024 | +178 | +0.7% |
| 2024 | Q4 | 21,951 | +108 | +0.0% |
| 2024 | Q3 | 21,934 | +334 | +0.8% |
| 2024 | Q2 | 21,872 | +861 | +2.6% |
| 2024 | Q1 | 21,846 | +1,060 | +3.0% |
| 2023 | Q4 | 21,843 | +1,174 | +3.6% |
| 2023 | Q3 | 21,600 | +1,047 | +3.1% |
| 2023 | Q2 | 21,011 | +794 | +2.2% |
See Clean Harbors's complete headcount history, including quarterly breakdowns.
Get the DataClean Harbors Employee Count by Region (2026)
North America accounts for the largest share of Clean Harbors's global workforce with approximately 71% of total employees, followed by South Asia and Sub-Saharan Africa.
Clean Harbors employees by region
| Region | Employees | % of Total |
|---|---|---|
| North America | 15,594 | 71.1% |
| South Asia | 5,277 | 24.1% |
| Sub-Saharan Africa | 361 | 1.6% |
| Northern Europe | 120 | 0.5% |
| Western Europe | 118 | 0.5% |
| Central America and the Caribbean | 73 | 0.3% |
| Arab States | 71 | 0.3% |
| Southern Europe | 60 | 0.3% |
| North Africa | 60 | 0.3% |
| Southeast Asia | 53 | 0.2% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataClean Harbors Employee Count by Department (2026)
Clean Harbors's employee groups are Finance and Operations (41.7%), Engineering (31.8%), and Sales and Marketing (26.5%).
Clean Harbors employees by department
| Department | Employees | % of Total |
|---|---|---|
| Finance and Operations | 9,182 | 41.7% |
| Engineering | 7,001 | 31.8% |
| Sales and Marketing | 5,825 | 26.5% |
Compare Clean Harbors's department mix to industry peers.
See Full DataClean Harbors Employee Salary by Region (2026)
Clean Harbors's average employee salary is $55,713 globally. Employees in North America receive the highest compensation. Pay is lowest in South Asia, at a median of $7,000.
Clean Harbors median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $61,000 |
| Pacific Islands | $46,000 |
| Northern Europe | $37,000 |
| Western Europe | $37,000 |
| Arab States | $32,000 |
| Central and Western Asia | $30,000 |
| Central America and the Caribbean | $28,000 |
| East Asia | $23,000 |
| Southern Europe | $23,000 |
| Eastern Europe | $20,000 |
| South America | $11,000 |
| Southeast Asia | $10,000 |
| Sub-Saharan Africa | $9,000 |
| South Asia | $7,000 |
| North Africa | $7,000 |
Unlock salary by role, level, and city — and compare to Clean Harbors's industry peers.
Unlock Salary DataClean Harbors Job Openings and Hiring Trends (2023-2026)
- Clean Harbors had 2,443 active job postings in 2026, a 15.1% increase (+261) from 2025.
- Clean Harbors had 2,182 active job postings in 2025, a 27.9% increase (+534) from 2024.
- Clean Harbors had 1,648 active job postings in 2024, a 15.5% decline (-276) from 2023.
- Clean Harbors had 1,924 active job postings in 2023, a 30.3% decline from 2022.
- Hiring velocity in 2026: 1,068 new roles/month, down from 1,297 in 2025 and 1,520 in 2024.
Clean Harbors's active job postings rose 15.1% in 2026 to 2,443, with new postings per month cooling from 2,562 in 2023 to 1,068 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataClean Harbors Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across Clean Harbors's workforce based on public professional data. Overall sentiment is negative and has declined year over year in 2026.
Overall
Unlock the full sentiment breakdown by department, tenure, and trend over time.
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Frequently Asked Questions About Clean Harbors
- How fast is Clean Harbors growing?
- In 2026, Clean Harbors's headcount grew 0.3% to 22,119 employees, up from 22,024 in 2025.
- See the full headcount history
- Where are Clean Harbors employees located?
- Most Clean Harbors employees are based in North America (71.1% of headcount), followed by South Asia and Sub-Saharan Africa.
- Explore where the workforce is based
- What is the average salary at Clean Harbors?
- The average employee salary at Clean Harbors is approximately $55.7k per year.
- Analyze the salary distribution
- How many new job postings does Clean Harbors open per year?
- In Q1 2026, Clean Harbors opened 3,203 new job postings. In 2025, Clean Harbors opened 15,560 new job postings — about 1,297 per month.
- Track hiring trends by role
- When was Clean Harbors founded and where is it headquartered?
- Clean Harbors was founded in 1980 and is headquartered in Norwell, Massachusetts.
- Compare Clean Harbors to industry peers
Speak with a workforce expert about Clean Harbors.
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