You Get a “Do Not Disturb” Hat

At a Tokyo-based data firm, employees can signal they’re deep in concentration by wearing a large, plush “Do Not Disturb” hat shaped like a squid, a traffic cone, or a sleeping cat. These whimsical hats are the official sign to leave someone alone unless it’s urgent.

It sounds silly—but it works. The visual cue replaces awkward “Sorry, are you busy?” interruptions. Plus, the absurdity makes the office feel more lighthearted. It’s not uncommon to see a conference room full of grown adults discussing revenue goals while someone wears a giant rubber duck hat.

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