How many employees work at Thermo Fisher Scientific?
Thermo Fisher Scientific, Inc. (TMO) has approximately 139,722 total employees worldwide as of December 2025, according to Revelio Labs workforce intelligence data. Thermo Fisher Scientific's total headcount has declined 2.1% from 142,787 employees in 2023 to 139,722 in 2025.
Data source: Revelio LabsCoverage: Global workforce, 2023–2026Published June 2026
Is Thermo Fisher Scientific hiring right now?
Yes, Thermo Fisher Scientific is actively hiring. Thermo Fisher Scientific had 9,955 active job postings in 2025, a 12.7% decline from 2024 — see job openings & hiring trends.
About Thermo Fisher Scientific's Workforce
Thermo Fisher Scientific, Inc. (TMO) is a Biotech and Healthcare Services company that employs 139,722 people worldwide as of December 2025. It is the largest by headcount among its peers. Founded in 1956, the company is headquartered in Waltham, Massachusetts and trades on the New York Stock Exchange.
Thermo Fisher Scientific's workforce has declined 2.1% from 2023 to 2025, down 1.0% year over year in 2025. It grew toward a low point before recovering, with headcount peaking at 138,301 in 2023 Q4 and then rising again to 139,722 by December 2025. Its workforce is concentrated most in the United States (38.3%), followed by India (8.7%) and the United Kingdom (5.5%), with India, its fastest-growing location, up 3.0%.
Thermo Fisher Scientific's largest functional groups are Finance and Operations (47.4%), Engineering (29.6%), and Sales and Marketing (23.0%). Median tenure across the company is 4.7 years. The average salary is $75,576, with regional medians of $100,000 in Northern America and $12,000 in Southern Asia.
Thermo Fisher Scientific's active job postings fell 12.7% in 2025 to 9,955, as postings per month cooled from 6,679 in 2023 to 6,023 in 2025. Overall employee sentiment is neutral but trending downward.
Sourced from Revelio Labs workforce data.
As of December 2025
Thermo Fisher Scientific
workforce metrics
Headcount
139.7k
1.0% YoY
Avg. Salary
$75.6k
2.1% YoY
Tenure
4.7yr
0.2yr YoY
Growth Rate
-1.0%
2.9pts YoY
Hiring Rate
Attrition Rate
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Thermo Fisher Scientific. Compare to peers, export the dataset, and access the full quarterly history.
- Thermo Fisher Scientific had 139,722 employees in 2025, a 1.0% decline (-1,342) from 2024.
- Thermo Fisher Scientific had 141,064 employees in 2024, a 2.0% increase (+2,763) from 2023.
- Thermo Fisher Scientific had 138,301 employees in 2023, a 4.0% decline (-5,587) from 2022.
Thermo Fisher Scientific's total workforce has grown from 138,301 employees in 2023 to 139,722 in 2025. Thermo Fisher Scientific's headcount peaked at 142,787 in 2023 before declining in 2023 and recovering through 2024 and 2025.
Thermo Fisher Scientific, Inc. — quarterly employee count (2023–2025)
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2025 | Q4 | 139,722 | -1,342 | -1.0% |
| 2025 | Q3 | 139,954 | -588 | -0.4% |
| 2025 | Q2 | 140,168 | +638 | +0.5% |
| 2025 | Q1 | 140,726 | +2,357 | +1.7% |
| 2024 | Q4 | 141,064 | +2,763 | +2.0% |
| 2024 | Q3 | 140,542 | +1,665 | +1.2% |
| 2024 | Q2 | 139,530 | -1,579 | -1.1% |
| 2024 | Q1 | 138,369 | -4,418 | -3.1% |
| 2023 | Q4 | 138,301 | -5,587 | -4.0% |
| 2023 | Q3 | 138,877 | -5,534 | -3.9% |
| 2023 | Q2 | 141,109 | -2,344 | -1.6% |
| 2023 | Q1 | 142,787 | +1,421 | +1.0% |
Want to see Thermo Fisher Scientific's complete headcount history back to 2017, including quarterly breakdowns?
The United States accounts for the largest share of Thermo Fisher Scientific's global workforce with approximately 38% of total employees, followed by India and the United Kingdom. Thermo Fisher Scientific's headcount in India is growing fastest among its major locations, up 3.0% year over year in 2025.
Thermo Fisher Scientific employees by country — 2025
| Country | Employees | % of Total | YoY % |
|---|---|---|---|
| United States | 53,502 | 38.3% | -1.6% |
| India | 12,195 | 8.7% | +3.0% |
| United Kingdom | 7,685 | 5.5% | -2.1% |
| China | 7,414 | 5.3% | -0.9% |
| Italy | 4,980 | 3.6% | +1.7% |
| Germany | 4,896 | 3.5% | +1.8% |
| Canada | 3,679 | 2.6% | -0.1% |
| France | 3,166 | 2.3% | +1.6% |
| Netherlands | 2,968 | 2.1% | -0.5% |
| Mexico | 2,552 | 1.8% | +1.6% |
Drill into city-level data, hiring trends by region and historic geographic shifts
Thermo Fisher Scientific's largest employee groups are Finance and Operations (47.4%), Engineering (29.6%), and Sales and Marketing (23.0%).
Thermo Fisher Scientific employees by department — 2025
| Department | Employees | % of Total | YoY % |
|---|---|---|---|
| Finance and Operations | 66,049 | 47.4% | -0.2% |
| Engineering | 41,164 | 29.6% | -0.5% |
| Sales and Marketing | 31,988 | 23.0% | -0.4% |
Compare Thermo Fisher Scientific's department mix to industry peers.
Thermo Fisher Scientific's average employee salary is $75,576 globally. Employees in Northern America receive the highest compensation, with median pay approximately 1.3x the global average. Pay is lowest in Southern Asia, at a median of $12,000.
Thermo Fisher Scientific median employee salary by region — 2025 (USD)
| Region | Median Salary |
|---|---|
| Northern America | $100,000 |
| Pacific Islands | $80,000 |
| Western Europe | $77,000 |
| Northern Europe | $68,000 |
| Arab States | $52,000 |
| Eastern Asia | $46,000 |
| Central and Western Asia | $45,000 |
| Southern Europe | $42,000 |
| Eastern Europe | $30,000 |
| Central America and the Caribbean | $26,000 |
| South-Eastern Asia | $23,000 |
| Sub-Saharan Africa | $20,000 |
| Southern America | $16,000 |
| Northern Africa | $13,000 |
| Southern Asia | $12,000 |
Unlock salary by role, level, and city — and compare to Thermo Fisher Scientific's industry peers.
- Thermo Fisher Scientific had 9,955 active job postings in 2025, a 12.7% decline (-1,345) from 2024.
- Thermo Fisher Scientific had 11,300 active job postings in 2024, a 10.5% increase (+1,130) from 2023.
- Thermo Fisher Scientific had 10,170 active job postings in 2023, a 40.3% decline from 2022.
- Hiring velocity in 2025: 6,023 new roles/month, down from 9,330 in 2024 and 6,679 in 2023. New metric
Thermo Fisher Scientific's hiring is slowing: active job postings fell 12.7% in 2025 to 9,955, with new postings per month cooling from 6,679 in 2023 to 6,023 in 2025.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Revelio Labs tracks employee sentiment across Thermo Fisher Scientific's workforce based on public professional data. Overall sentiment is neutral and has declined year over year in 2025.
Overall
Unlock the full sentiment breakdown by department, tenure, and trend over time.
Similar Biotech and Healthcare Services Companies by Employee Count
- How fast is Thermo Fisher Scientific growing?
- In 2025, Thermo Fisher Scientific's headcount shrank 1.0% to 139,722 employees, down from 141,064 in 2024.
- Where are Thermo Fisher Scientific employees located?
- Most Thermo Fisher Scientific employees are based in the United States (38.3% of headcount), followed by India and the United Kingdom.
- What is the average salary at Thermo Fisher Scientific?
- The average employee salary at Thermo Fisher Scientific is approximately $75.6k per year.
- How many people does Thermo Fisher Scientific hire per year?
- In 2025, Thermo Fisher Scientific opened roughly 72,276 new roles — about 6,023 per month.
- When was Thermo Fisher Scientific founded and where is it headquartered?
- Thermo Fisher Scientific was founded in 1956 and is headquartered in Waltham, Massachusetts.
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