How many employees work at Eisai, Inc.?
Eisai, Inc. has 3,301 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is -5.6%.
Data source: Revelio Labs Coverage: Global workforce Latest update: December 2025
About Eisai, Inc.
At Eisai Inc., human health care (hhc) is our goal. We give our first thought to patients and their families, and helping to increase the benefits health care provides. As the U.S. pharmaceutical subsidiary of Tokyo-based Eisai Co., Ltd., we have a passionate commitment to patient care that is the driving force behind our efforts to discover and develop innovative therapies to help address unmet medical needs. Eisai is a fully integrated pharmaceutical business that operates in two global business groups: oncology and neurology (dementia-related diseases and neurodegenerative diseases). Each group functions as an end-to-end global business with discovery, development, and marketing capabilities. Our U.S. headquarters, commercial and clinical development organizations are located in New Jersey; our discovery labs are in Massachusetts and Pennsylvania; and our global demand chain organization resides in Maryland and North Carolina. To learn more about Eisai Inc., please visit us at www.eisai.com/US. Comments and posts by users on this site are not created or controlled by Eisai Inc. and Eisai is not responsible for such content.
As of December 2025
Eisai, Inc.
workforce metrics
Headcount
3.3k
Avg. Salary
$143.6k
Tenure
5.3yr
Growth Rate
-5.6%
Hiring Rate
Attrition Rate
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Employee Headcount
Interactive chart of Eisai, Inc. annual worldwide employee count from 2023 to 2025.
- Eisai, Inc. total number of employees in 2025 was 3,298, a 5.6% decline from 2024.
- Eisai, Inc. total number of employees in 2024 was 3,488, a 2.7% decline from 2023.
- Eisai, Inc. total number of employees in 2023 was 3,584, a 2.3% increase from 2022.
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Employee Geographic Breakdown
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Active Job Postings
Interactive chart of Eisai, Inc. annual active job postings from 2023 to 2025.
- Eisai, Inc. active job postings in 2025 was 173, a 71.4% increase from 2024.
- Eisai, Inc. active job postings in 2024 was 82, a 70.9% decline from 2023.
- Eisai, Inc. active job postings in 2023 was 172, a 25.8% decline from 2022.
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Employee Sentiment
Sentiment Topics
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