Quest Diagnostics number of employees

Quest Diagnostics reported 57,000 employees at December 31, 2025 in its latest annual report, up 1,000 (1.8%) on the year before. That compares with 49,000 at December 31, 2021. Revenue per employee was $193,596.

Headcount by year

Fiscal year end	Employees	Change	Revenue per employee	Source
December 31, 2025	57,000	+1,000 (1.8%)	$193,596	10-K, filed February 26, 2026
December 31, 2024	56,000	+8,000 (16.7%)	$176,286	10-K, filed February 20, 2025
December 31, 2023	48,000	−1,000 (2.0%)	$192,750	10-K, filed February 22, 2024
December 31, 2022	49,000	+0 (0.0%)	$201,694	10-K, filed February 21, 2023
December 31, 2021	49,000	—	$220,163	10-K, filed February 28, 2022

What the annual reports say

As of December 31, 2025, we have nearly 57,000 employees globally (including LifeLabs’ approximately 6,800), of whom approximately 46,000 are full-time and the remainder are part-time or on-call. 2025 annual report
As of December 31, 2024, we have approximately 56,000 employees globally (including LifeLabs’ approximately 6,600), of whom approximately 45,000 are full-time and the remainder are part-time or on-call. 2024 annual report
As of December 31, 2023, we have approximately 48,000 employees, of whom approximately 40,000 are full-time and the remainder are part-time or on-call. 2023 annual report
As of December 31, 2022, we have approximately 49,000 employees, of whom approximately 40,000 are full-time and the remainder are part-time or on-call. 2022 annual report
As of December 31, 2021, we have approximately 49,000 employees, of whom approximately 40,000 are full-time and the remainder are part-time or on-call. 2021 annual report

Headcount as the company states it in Item 1 of its annual report (some count full-time equivalents or exclude part-time and temporary staff), at the date it gives. Years where the report states no clear total are left out rather than estimated. Changes can reflect acquisitions and disposals as well as hiring and job cuts.

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Figures from Quest Diagnostics's SEC filings (10-K and 10-Q), retrieved October 24, 2026. How we read and check them: methodology and data sources. Not investment advice. Back to Quest Diagnostics.