Tetra Tech’s annual Gender Pay Gap (GPG) report has been released today (03 April 2025). Our Gender Pay Gap results are based on the snapshot date of 5 April 2024.
We are required to publish data for any legal entity where we have more than 250 employees. Currently, this only includes Tetra Tech Limited. However, for transparency, we have also shared the combined figures for all legal entities that currently sit under Tetra Tech Group Limited in the UK.
Notes regarding the way in which our figures are calculated can be found at the end of this article.
Belong at Tetra Tech
At Tetra Tech, we want everyone to feel like they truly belong.
We strive to create a workplace where every person is valued and respected for who they are; to create an environment that celebrates diversity of thought, unique perspectives, backgrounds and experiences, fostering collaboration and innovation. We firmly believe that this approach will enable us to foster innovative solutions to the world’s most complex issues.
To support this approach long term, our social value programme includes activities in schools and universities that encourage people from any walk of life to pursue a career in STEM; we continue to work hard to attract, retain and support colleagues from the widest backgrounds and talents to enable us to continue to be Leading with Science®. We also see it as an integral part of supporting and benefitting the communities where we live and work.
Our belief in the benefits of diversity of thought is exemplified by our senior leadership team which consists of the leaders from both our technical disciplines and business functions who bring a wide range of experience, expertise and ideas to the table.
Observations on the Data
Across the Tetra Tech group of companies, we continue to see incremental improvements to both the mean and median gender pay gap supported by an over 2% increase in the number of females within our upper quartile.
Our aim is to continue to improve by applying a ‘no one-size fits all’ approach to supporting our employees. Initiatives such as our hybrid working arrangements, mentoring scheme, wellbeing activities and career pathways are in place for all our employees to benefit from in a way that works for them.
Notes on what is Being Reported and How is it Calculated
Gender Pay is not the same as Equal Pay. Equal pay is legally required and makes sure that both genders receive the same pay for doing the same (or equivalent) job.
Gender Pay is the comparison of the average hourly pay of men and the average hourly pay of women irrespective of the job they do, expressed as a percentage. We are legally required to share both a Median and Mean calculation.
Median: This is calculated by lining up the remuneration of male and female employees from highest to lowest. The median compares the female and the male in the middle of their lines.
Mean: This is the average of the whole sample for both men and women and therefore can be affected by extreme values at either end of the pay distribution.
Our reported data can also be found on the UK Government’s website: TETRA TECH LIMITED gender pay gap report for 2024-25 reporting year
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