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Our commitment to social sustainability and corporate social responsibility includes advancing well-being not just in our communities, but across our highly connected, global employee network.

Human Capital

Tetra Tech’s foundation is our people. Our industry-leading engineers, scientists, and technical specialists create innovative solutions for our clients’ most complex challenges. We invest in our teams by building a diverse workforce, fostering employee engagement, and providing learning and development opportunities at every stage of our employees’ careers. We have one of the lowest employee turnover rates in our industry.

Professional Development

All employees can access training, technical exchange, and skill development through our Tetra Tech Academy Learning and Development Program and customized Learning Management System (LMS), providing professional development opportunities throughout our employees’ careers.

We also offer a range of professional development programs through our Leadership Academy, Project Management (PM) training, and Fearless Entrepreneur program.

Diversity, Equity, Inclusion, and Accessibility

We believe a diverse workforce brings a unique set of perspectives, experiences, and ideas that benefit our teams and our clients. Our Diversity, Equity, Inclusion & Accessibility (DEIA) Program is holistic and interconnected with our Wellness Program and Health & Safety Program, as well as core functions of the Company such as recruiting, business practices, and operations.

Find out how Tetra Tech is creating inclusive workplaces.

Health and Wellness

Tetra Tech recognizes the importance of our employees’ mental and physical health in the office, in the field, and in their personal lives. We believe a healthy employee community is a thriving employee community.

Tetra Tech employees in Healthy Life Challenge shirts smile for a photo while on a hike in Quebec


Our corporate Wellness Program provides global resources to support employees and their families to live healthy, balanced lives at work and at home. We enable our employees and their families to connect and share healthy habits and physical fitness activities through our global Healthy Life Community and our annual Healthy Life Challenge.

Health and Safety

Tetra Tech is committed to providing a healthy and safe environment for all our employees and implementing best practices that comply with local regulatory requirements. We have robust and comprehensive health and safety programs, injury prevention programs, training, and hazard assessment tools. We track safety metrics for Lost Workday Incident Rate (LWDIR) and Total Recordable Incident Rate (TRIR). In 2023 our LWDIR was 73 percent better than industry average, and our TRIR also was 73 percent better than industry average.

Our incident metrics inform our operations around the world to ensure all employees’ health and safety needs are being met.

Learn more about our commitment to Leading with Safety.


Total Recordable Incident Rate (TRIR) 

In 2023 our enterprise-wide TRIR was 73 percent better than industry average.


Lost Workday Incident Rate (LWDIR)

In 2023 our enterprise-wide LWDIR was 73 percent better than industry average.

Social Responsibility

Our employees lead our giving and volunteering efforts to preserve, strengthen, and support their local communities—from supporting food kitchens and holiday donation drives to river clean-ups and youth activities. We recognize those efforts in our annual Excellence & Achievement Award for Community Service, presented to those employees who have excelled in supporting their communities and people in need.

Tetra Tech partners annually with a charity or global organization to support communities in need around the world. In 2022 we partnered with Engineers Without Borders USA to bring safe and clean water to families in Eastern Uganda.

Our award-winning Science, Technology, Engineering, and Mathematics (STEM) Program aims to promote and increase engagement in STEM subjects. Since its inception, the program has reached more than 20,400 people and is helping to grow the next generation of innovators and problem solvers.

Learn more about our Sustainability Program

A stream and vegetation-covered rocks and banks in a forest with mist and the sun shining through the trees


A group of people in green shirts with shovels and a wheelbarrow are ready to plant trees


A dark image with lit up honeycomb shapes containing words and symbols related to governance and regulations


A globe of the world rests on grass and reflects the surrounding trees and ferns

ESG Resources

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