Slack reviews

4.0

77% would recommend to a friend

(1,094 total reviews)
avatar

Stewart Butterfield

88% approve of CEO

70% positive business outlook

Slack has an employee rating of 4.0 out of 5 stars, based on 1,094 company reviews on Glassdoor which indicates that most employees have a good working experience there. The Slack employee rating is in line with the average (within 1 standard deviation) for employers within the Informationstechnologie industry (3.9 stars).

Reviews by job title

1K reviews
5.0
Oct 3, 2025

Nice company to work for

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

Benefits / culture / innovative work

Cons

Not really much to say here

3.0
Sep 25, 2025
Recommend
CEO approval
Business Outlook

Pros

Marketing brand opportunities Interesting work Working for a cool company

Cons

Ability to get promoted Work life balance

3.0
Sep 22, 2025

Wouldn’t recommend if you want to improve your career

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

Onboarding Perks and Benefits Team bonding Organization and Protocols

Cons

Lack of adequate training. Cut throat environment. Two way speak (Says one thing, does another) Information silos Jealously and bad faith criticism

Viewing 25 - 27 of 1,094 Reviews

Glassdoor has 1,226 Slack reviews submitted anonymously by Slack employees. Read employee reviews and ratings on Glassdoor to decide if Slack is right for you.