Mars reviews

4.3

87% would recommend to a friend

(4,391 total reviews)
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Poul Weihrauch

92% approve of CEO

77% positive business outlook

Mars has an employee rating of 4.3 out of 5 stars, based on 4,391 company reviews on Glassdoor which indicates that most employees have an excellent working experience there. The Mars employee rating is 24% above average for employers within the Manufactura industry (3.5 stars).

Reviews by job title

4K reviews
5.0
May 1, 2026
Recommend
CEO approval
Business Outlook

Pros

Culture, collaboration, PTO, growth opportunities

Cons

Due to how large Mars is it can sometimes take longer to accomplish what a smaller company can achieve as they are often more agile. Still a great company to work for.

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Mars Response
1mo
Thank you for sharing your thoughts on your time with us. We appreciate feedback and use it wherever possible to create better experiences for everyone. We’re committed to supporting the wellbeing and development of our Associates, so if there are any ways you feel we can improve, please get in touch with your People and Organization team. We look forward to hearing from you, and wish you the best for your future.
2.0
Apr 30, 2026

Inconsistent leadership undermines strong company values

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

• Strong narrative and ambition around growth, especially at the top • Well-defined frameworks that look robust on paper • A small number of genuinely strong leaders who uphold standards and push for real accountability

Cons

• The “Associates” concept is not consistently lived—many employees feel more used than valued • Contributions are often not recognised; high performers can feel invisible unless they actively self-promote • Management is aware of engagement and morale issues but action is slow or superficial • Casual racism and bias exist in parts of the organisation and are often tolerated or ignored rather than addressed directly • Inclusion is talked about more than it is enforced in day-to-day behaviours • Career development is weak and inconsistent. • Opportunities are not always merit-based; favoritism and internal networks play a significant role in who gets visibility and advancement • Accountability is low—leaders are comfortable leading discussions but avoid owning outcomes • Missed commitments rarely have consequences, which lowers the overall performance bar • Decision-making is slow, political, and often happens offline; formal forums are sometimes just for alignment, not real decisions • Governance is selectively followed—processes are bypassed when inconvenient!! • A culture of “chasing” is normalized—teams spend excessive time following up instead of executing • Strong individuals are relied upon to hold things together; when they leave, performance drops • Leadership frequently pushes ambitious targets without taking full ownership of operational realities, creating downstream pressure on teams • There is a tendency to label those who uphold standards and governance as “difficult” or “inflexible,” instead of addressing underlying gaps • Constructive challenge is sometimes dismissed or redirected, creating a perception that speaking up carries more risk than staying aligned • At times, leadership narratives can shift to suit the situation, which can feel like a dismissal of earlier positions or agreed principles • Associates who push for discipline and accountability may feel their intent is mischaracterised rather than genuinely considered

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Mars Response
1mo
Thank you for taking the time to write your review. We’re sorry to hear your experience with us has not been positive. We aim to support our Associates in every way throughout their time with us and are committed to their wellbeing and development. Please reach out to the independent, confidential team at ombudsman@effem.com, and we look forward to discussing this further.
4.0
Apr 28, 2026
Recommend
CEO approval
Business Outlook

Pros

Great culture and coworkers. Principle driven

Cons

Things unclear with the merger

Viewing 16 - 18 of 4,391 Reviews

Glassdoor has 6,740 Mars reviews submitted anonymously by Mars employees. Read employee reviews and ratings on Glassdoor to decide if Mars is right for you.