The office is doing a costume day. What can I actually wear, and is a costume from another culture okay?

The email went out on Monday: costume contest Friday, prizes for best group costume. Half the team is thrilled. The other half is quietly doing math: how much effort reads as fun rather than desperate? Is the sombrero from a bachelor party a joke or a problem? And can you still go as a sexy anything if it’s “ironic”?

The awkward part is that Halloween runs on two sets of norms at once. At a friend’s party, edgy is half the point. At work, everyone who sees your costume will also see your name on the next performance review, and some of them never chose to be part of the joke.

Why the office changes the rules

An office costume day is still a work function, and the etiquette expert Diane Gottsman puts it bluntly: steer clear of costumes that show too much skin or are controversial, because embarrassing yourself follows you “far beyond the Halloween party.” HR people say much the same. A SHRM piece on Halloween at work lists outfits that routinely cause trouble: blackface, cultural stereotypes, terrorists, refugees, homeless people, mental illness and national tragedies, along with political, religious, revealing or gruesome costumes in general. The same piece notes that some colleagues object to Halloween on religious grounds, which is why participation should always be optional.

Culture-as-costume is where people genuinely disagree, which is exactly why it doesn’t belong at work. In YouGov’s October 2024 poll, only 56% of Americans said it’s acceptable for an adult to wear a cultural costume from a culture they aren’t part of, and 52% said the same of a non-Native person dressing as a Native American. On blackface the gap is starker: 70% of Black Americans called it unacceptable. When roughly half the room thinks your outfit is fine and the other half is hurt by it, the costume has stopped being a costume and become a statement.

The useful test is simple: are you dressing as a character or as a people? A specific fictional person (Moana, Mulan, Black Panther) is a character, especially if you play it straight rather than adding an accent or skin-darkening makeup. “Mexican,” “geisha,” “Indian chief” or “sheikh” is a whole group of real people, reduced to props.

What to say

Edge cases: when the answer shifts

• You belong to the culture. Wearing your own traditional dress is not a costume; it’s clothing. Many people still save it for occasions where it’s honored rather than judged in a contest.
• Kids’ costume parade at work. Children get more grace, but the same “character, not a people” rule spares parents an awkward conversation.
• Remote team. On camera, a hat, ears or a themed background counts. See our video call etiquette guide for keeping it from becoming a distraction.
• Weapons and masks. Leave realistic prop guns at home, and pick a mask you can take off so people know who they’re talking to.
• Political figures and your boss. Satire that lands at a bar can read as hostility in a meeting. Skip both.