How Slack’s CEO Used Embarrassment to Motivate Employees | Stewart Butterfield’s Leadership Strategy (2026)

Imagine a workplace where employees plaster the CEO's harsh words on the walls. It happened at Slack, and it's a story that sparks curiosity and debate!

Slack co-founder Stewart Butterfield believes in the power of embarrassment as a motivator. In a 2014 interview, he didn't hold back, calling an early version of Slack "terrible." But here's the twist: the next day, employees covered the office walls with this very quote! And Butterfield? He embraced it.

During his tenure as CEO from 2009 to 2023, Butterfield encouraged a culture of perpetual improvement. He shared his philosophy on 'Lenny's Podcast,' recalling his unfiltered assessment of Slack. But why would employees react by papering the office with his criticism? And how did this impact the company's trajectory?

Butterfield's belief in continuous improvement mirrors Toyota's 'kaizen' principle, emphasizing quality and efficiency. He also drew inspiration from Ray Dalio, whose ski instructor likened his approach to solving puzzles. These principles guided Slack's journey, eventually leading to its acquisition by Salesforce for a staggering $27.7 billion.

The art of constructive criticism is a delicate balance. While Butterfield's approach worked for Slack, it might not suit every leader or organization. Netflix's CTO, for instance, champions timely and candid feedback, while Meta's CFO praises Mark Zuckerberg's refined feedback skills.

So, was Butterfield's strategy a stroke of genius or a risky move? And how should leaders navigate the fine line between motivation and morale? These questions linger, inviting diverse perspectives and sparking intriguing discussions.

How Slack’s CEO Used Embarrassment to Motivate Employees | Stewart Butterfield’s Leadership Strategy (2026)
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