How many employees work at Clean Harbors?
Clean Harbors, Inc. (CLH) has approximately 20,763 total employees worldwide as of December 2025, according to Revelio Labs workforce intelligence data. Clean Harbors's total headcount has grown 1.7% from 20,425 employees in 2023 to 20,763 in 2025.
Data source: Revelio LabsCoverage: Global workforce, 2023–2026Published June 2026
Is Clean Harbors hiring right now?
Yes, Clean Harbors is actively hiring. Clean Harbors had 2,187 active job postings in 2025, a 25.6% increase from 2024 — see job openings & hiring trends.
About Clean Harbors's Workforce
Clean Harbors, Inc. (CLH) is an Environmental Services company that employs 20,763 people worldwide as of December 2025. It is the 3rd-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 1.7% from 2023 to 2025, though it is down 0.1% year over year in 2025. Its workforce is concentrated most in the United States (66.5%), followed by India (12.8%) and Canada (10.8%), with India, its fastest-growing location, up 3.2%.
Clean Harbors's largest functional groups are Finance and Operations (40.5%), Engineering (32.5%), and Sales and Marketing (27.0%). Median employee tenure is 4.7 years. The average salary is $57,852, ranging from a median of $58,000 in Northern America to $7,000 in Southern Asia.
Clean Harbors's active job postings rose 25.6% in 2025 to 2,187, with new postings per month cooling from 2,795 in 2023 to 1,302 in 2025. Overall employee sentiment is negative and broadly stable.
Sourced from Revelio Labs workforce data.
As of December 2025
Clean Harbors
workforce metrics
Headcount
20.8k
0.1% YoY
Avg. Salary
$57.9k
1.3% YoY
Tenure
4.7yr
0.2yr YoY
Growth Rate
-0.1%
0.2pts YoY
Hiring Rate
Attrition Rate
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.
- Clean Harbors had 20,763 employees in 2025, a 0.1% decline (-12) from 2024.
- Clean Harbors had 20,775 employees in 2024, a 0.2% decline (-46) from 2023.
- Clean Harbors had 20,821 employees in 2023, a 2.0% increase (+411) from 2022.
Clean Harbors's total workforce has grown from 20,425 employees in 2023 to 20,763 in 2025.
Clean Harbors, Inc. — quarterly employee count (2023–2025)
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2025 | Q4 | 20,763 | -12 | -0.1% |
| 2025 | Q3 | 20,781 | -12 | -0.1% |
| 2025 | Q2 | 20,759 | -48 | -0.2% |
| 2025 | Q1 | 20,771 | -39 | -0.2% |
| 2024 | Q4 | 20,775 | -46 | -0.2% |
| 2024 | Q3 | 20,793 | +61 | +0.3% |
| 2024 | Q2 | 20,807 | +311 | +1.5% |
| 2024 | Q1 | 20,810 | +385 | +1.9% |
| 2023 | Q4 | 20,821 | +411 | +2.0% |
| 2023 | Q3 | 20,732 | +332 | +1.6% |
| 2023 | Q2 | 20,496 | +238 | +1.2% |
| 2023 | Q1 | 20,425 | +322 | +1.6% |
Want to see Clean Harbors's complete headcount history back to 2017, including quarterly breakdowns?
The United States accounts for the largest share of Clean Harbors's global workforce with approximately 67% of total employees, followed by India and Canada. Clean Harbors's headcount in India is growing fastest among its major locations, up 3.2% year over year in 2025.
Clean Harbors employees by country — 2025
| Country | Employees | % of Total | YoY % |
|---|---|---|---|
| United States | 13,757 | 66.5% | -0.7% |
| India | 2,650 | 12.8% | +3.2% |
| Canada | 2,240 | 10.8% | +0.2% |
| United Kingdom | 327 | 1.6% | +0.0% |
| Kenya | 122 | 0.6% | +1.5% |
| South Africa | 113 | 0.5% | +1.4% |
| Australia | 92 | 0.4% | +2.9% |
| France | 73 | 0.4% | +0.0% |
| Germany | 71 | 0.3% | +2.1% |
| Spain | 55 | 0.3% | +0.0% |
Drill into city-level data, hiring trends by region and historic geographic shifts
Clean Harbors's largest employee groups are Finance and Operations (40.5%), Engineering (32.5%), and Sales and Marketing (27.0%).
Clean Harbors employees by department — 2025
| Department | Employees | % of Total | YoY % |
|---|---|---|---|
| Finance and Operations | 8,279 | 40.5% | +0.3% |
| Engineering | 6,639 | 32.5% | +0.1% |
| Sales and Marketing | 5,514 | 27.0% | -0.9% |
Compare Clean Harbors's department mix to industry peers.
Clean Harbors's average employee salary is $57,852 globally. Employees in Northern America receive the highest compensation. Pay is lowest in Southern Asia, at a median of $7,000.
Clean Harbors median employee salary by region — 2025 (USD)
| Region | Median Salary |
|---|---|
| Northern America | $58,000 |
| Pacific Islands | $42,000 |
| Western Europe | $36,000 |
| Northern Europe | $32,000 |
| Arab States | $31,000 |
| Eastern Asia | $27,000 |
| Southern Europe | $24,000 |
| Central America and the Caribbean | $23,000 |
| Eastern Europe | $22,000 |
| Southern America | $15,000 |
| Central and Western Asia | $15,000 |
| South-Eastern Asia | $11,000 |
| Northern Africa | $10,000 |
| Sub-Saharan Africa | $8,000 |
| Southern Asia | $7,000 |
Unlock salary by role, level, and city — and compare to Clean Harbors's industry peers.
- Clean Harbors had 2,187 active job postings in 2025, a 25.6% increase (+496) from 2024.
- Clean Harbors had 1,691 active job postings in 2024, a 13.0% decline (-235) from 2023.
- Clean Harbors had 1,926 active job postings in 2023, a 30.2% decline from 2022.
- Hiring velocity in 2025: 1,302 new roles/month, down from 1,573 in 2024 and 2,795 in 2023. New metric
Clean Harbors's active job postings rose 25.6% in 2025 to 2,187, with new postings per month cooling from 2,795 in 2023 to 1,302 in 2025.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Revelio Labs tracks employee sentiment across Clean Harbors's workforce based on public professional data. Overall sentiment is negative and has held steady year over year in 2025.
Overall
Unlock the full sentiment breakdown by department, tenure, and trend over time.
Similar Environmental Services Companies by Employee Count
- How fast is Clean Harbors growing?
- In 2025, Clean Harbors's headcount shrank 0.1% to 20,763 employees, down from 20,775 in 2024.
- Where are Clean Harbors employees located?
- Most Clean Harbors employees are based in the United States (66.5% of headcount), followed by India and Canada.
- What is the average salary at Clean Harbors?
- The average employee salary at Clean Harbors is approximately $57.9k per year.
- How many people does Clean Harbors hire per year?
- In 2025, Clean Harbors opened roughly 15,624 new roles — about 1,302 per month.
- When was Clean Harbors founded and where is it headquartered?
- Clean Harbors was founded in 1980 and is headquartered in Norwell, Massachusetts.
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