Sometimes you don’t want to show your face at work, and some companies in China are taking this to a whole other level.

Behold the faceless employee! And, apparently, it’s not just a prank to confuse the boss.

Companies in Handan in northern China’s Hebei province held a so-called “relaxation day” Tuesday in which workers were allowed to wear masks to hide their facial expressions.

The monthly event uses various themes that allow workers from security guards to office workers to let their hair down, so to speak, with “faceless day” being the latest, according to the Associated Press.

To encourage anonymity, many wore the same expressionless, black-and-white mask with purple highlights from the Japanese animated film Spirited Away, in which an ominous, ghostly figure known as “No Face” is seen popping up in various places wearing it and confronting other characters.

Originally released in Japan in 2001, the story about a girl trapped in a world of spirits scored a box-office bonanza in its homeland and became the most profitable film of all time in that country. It even surpassed Titanic’s Japanese box-office grosses from 1997-1998, and won the Best Animated Feature Oscar in 2002.

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