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Charles River Laboratories

Engaged Employer

Charles River Laboratories reviews

3.1

49% would recommend to a friend

(2,371 total reviews)
avatar

Birgit Girshick

77% approve of CEO

33% positive business outlook

Charles River Laboratories has an employee rating of 3.1 out of 5 stars, based on 2,371 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
2.0
Jan 27, 2026
Recommend
CEO approval
Business Outlook

Pros

Good job for a year to get experience and get out.

Cons

Never the same after MPI sold. Corporate greed, horrible hours, squeeze every ounce of life from you. Insurance was middle of the road. Pay time off is average, took 2 weeks away that I EARNED as employee of MPI.

2.0
Jan 27, 2026

Terrible culture

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

My team was great with only very few exceptions

Cons

Overall toxic environment, there is always the expectation you will work more and this effort is not acknowledged, salaries are low

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Charles River Laboratories Response
4mo
Thank you for sharing your experience. We’re committed to fostering a respectful and empowering workplace, and we take feedback like yours seriously as we work to strengthen our culture.
3.0
Jan 24, 2026

Okay place

Recommend
CEO approval
Business Outlook

Pros

PTO, benefits, flexibility, location, sick time

Cons

Depending on the department your day to day work changes

avatar
Charles River Laboratories Response
4mo
Thank you for the kind words. It’s great to know you’re having a positive experience—your feedback helps reinforce what we’re doing well.
Viewing 49 - 51 of 2,371 Reviews

Glassdoor has 2,662 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.