How many employees work at ESR?
Institute of Environmental Science & Research Ltd. has 513 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is -6.4%.
Data source: Revelio Labs Coverage: Global workforce Latest update: December 2025
About ESR
Keeping People Safe and Healthy through Science ESR (The Institute of Environmental Science and Research) is a Crown research institute that delivers world-class knowledge, research and laboratory services to help the New Zealand Government get the most out of its investment in science and innovation. We use the power of science to help our partners and clients solve complex problems and protect people and products in New Zealand, and around the world. It’s our science that lies behind the decisions that safeguard people’s health, protect our food-based economy, improve the safety of our freshwater and groundwater resources and provide the justice sector with expert forensic science. Our staff bring a wealth of different experiences and backgrounds to deliver this expertise. You can find out more about careers at ESR and the jobs on offer at our dedicated careers site: https://nzcris.wd3.myworkdayjobs.com/nzcris
As of December 2025
ESR
workforce metrics
Headcount
513
Avg. Salary
$69.5k
Tenure
5.9yr
Growth Rate
-6.4%
Hiring Rate
Attrition Rate
For even more metrics data,
reach out to our sales team.
Employee Headcount
Interactive chart of ESR annual worldwide employee count from 2023 to 2025.
- ESR total number of employees in 2025 was 511, a 6.4% decline from 2024.
- ESR total number of employees in 2024 was 544, a 2.2% decline from 2023.
- ESR total number of employees in 2023 was 556, a 0.1% increase from 2022.
Would you like to see the latest employee headcount data?
Employee Geographic Breakdown
Would you like to see the latest employee geographic data?
Active Job Postings
Interactive chart of ESR annual active job postings from 2023 to 2025.
- ESR active job postings in 2025 was 0, a 200.0% decline from 2024.
- ESR active job postings in 2024 was 1, a 160.0% decline from 2023.
- ESR active job postings in 2023 was 9, a 200.0% increase from 2022.
Would you like to see the latest active job postings data?
Employee Sentiment
Sentiment Topics
Would you like to see the latest employee sentiment data?