C40 Reviews

3.7

65% would recommend to a friend

(62 total reviews)
avatar

Mark Watts

65% approve of CEO

52% positive business outlook

C40 has an employee rating of 3.7 out of 5 stars, based on 62 company reviews on Glassdoor which indicates that most employees have a good working experience there. The C40 employee rating is in line with the average (within 1 standard deviation) for employers within the Non-profit and NGO industry (3.7 stars).

Reviews by job title

62 reviews
1.0
3 Mar 2026

Red Flag for Black & Asian Prospective Employees

Anonymous employee
Recommend
CEO approval
Business outlook

Pros

Ideal for individuals whose strength lies in charm and polish rather than critical thinking

Cons

- Senior white staff openly assert their privileges, shaping a culture where Black and minority staff are routinely sidelined. - Talented African and Black professionals are often blocked from high-profile opportunities, especially at senior levels due to senior leadership's fragility. - Over the past three years, two African regional directors have left, highlighting a hostile working environment and leadership instability. - African staff are underpaid relative to responsibilities and market standards, typically being paid in their local currencies. - HR are chronically underqualified, overreach and intentionally fail to protect staff equitably, particularly minorities. - Systemic bias and lack of inclusive leadership undermine equity and inclusion, particularly at the very senior levels. - Despite publicly promoting diversity, equity, and inclusion, the organisation remains far behind best practices as of 2026. These patterns make it a challenging environment for underrepresented talent seeking growth and recognition.

5.0
8 Jan 2026
Recommend
CEO approval
Business outlook

Pros

Extremely competent and wonderful colleagues

Cons

Lots of fixed-term contracts - long-term job security is a common concern. Global nature of organisation can impact your working hours/work-life balance.

2.0
5 Jan 2026

Don't recommend unless you're a 25 yo vegan

Anonymous employee
Recommend
CEO approval
Business outlook

Pros

People mostly practice what they preach

Cons

Feels like joining a cult, everyone accepts chaos

Viewing 1 - 3 of 62 Reviews

Glassdoor has 81 C40 reviews submitted anonymously by C40 employees. Read employee reviews and ratings on Glassdoor to decide if C40 is right for you.