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Charles River Laboratories

Engaged Employer

Charles River Laboratories reviews

3.1

49% would recommend to a friend

(2,372 total reviews)
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Birgit Girshick

66% approve of CEO

33% positive business outlook

Charles River Laboratories has an employee rating of 3.1 out of 5 stars, based on 2,372 company reviews on Glassdoor which indicates that most employees have a good working experience there. The Charles River Laboratories employee rating is in line with the average (within 1 standard deviation) for employers within the Pharmaceutical & Biotechnology industry (3.5 stars).

Reviews by job title

2K reviews
4.0
Feb 4, 2026

Overall Good Experience

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

Good benefits, flexible working schedule, good PTO, coworkers were great

Cons

Layoffs were done to save face with stakeholders instead of investing in employees, corporate sends out of touch messaging, a bit stressful and high pace

3.0
Feb 1, 2026
Recommend
CEO approval
Business Outlook

Pros

Plenty of PTO and sick leave. The Charles River location I worked for would have catered lunches for the entire team, give out gift cards, provide donuts for breakfast. We'd have team events like bowling.

Cons

So much physical labor that my body would ache at the end of my shift. Very robotic work. Doing the same thing everyday (it can get boring after awhile). After you become a ACT 3 you cannot get any more promotions within that job.

Viewing 46 - 48 of 2,372 Reviews

Glassdoor has 2,663 Charles River Laboratories reviews submitted anonymously by Charles River Laboratories employees. Read employee reviews and ratings on Glassdoor to decide if Charles River Laboratories is right for you.