Tetra Tech, Inc. (FRA:TT6)

Tetra Tech Employees

Tetra Tech had 25,000 employees as of December 28, 2025. The number of employees decreased by 5,000 or -16.67% compared to the same quarter last year.

• Employees: 25,000
• Change: -5,000
• Growth: -16.67%
• Revenue / Employee: €151,545
• Profits / Employee: €11,968
• Market Cap: 8.27B

Employees History

Date	Employees	Change (1Y)	Growth (1Y)
Dec 28, 2025	25,000	-5,000	-16.67%
Sep 28, 2025	25,000	-5,000	-16.67%
Jun 29, 2025	30,000	2,000	7.14%
Mar 30, 2025	30,000	2,000	7.14%
Dec 29, 2024	30,000	3,000	11.11%
Sep 29, 2024	30,000	3,000	11.11%
Jun 30, 2024	28,000	1,000	3.70%
Mar 31, 2024	28,000	-	-
Dec 31, 2023	27,000	6,000	28.57%
Oct 1, 2023	27,000	6,000	28.57%
Oct 2, 2022	21,000	0	-
Jul 3, 2022	21,000	0	-
Apr 3, 2022	21,000	1,000	5.00%
Jan 2, 2022	21,000	1,000	5.00%
Oct 3, 2021	21,000	1,000	5.00%
Jun 27, 2021	21,000	1,000	5.00%
Mar 28, 2021	20,000	0	-