The 39 Definitive Rules of Office Fashion

If you’re not sure what to wear to work, you’re not alone. Use these 39 rules as your guide to navigating fashion choices in a professional workplace. We know that “rules are made to be broken” – hello rule #38 – but if you’re a new grad, think twice before throwing caution to the wind. Lycra bike shorts and a blazer may not be the killer work fit that you think it is.

If you’re currently a college student, there’s a little bit of wiggle room here (we’re looking at you rules #12, #16 and #32). For everyone, we’re loving rule #21. If you’re a student preparing for a career fair, networking event or interview, use these rules as a guide and check out our Career Fair Look Book.


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If you’re going to sit at a desk all day, you might as well be comfortable. Pants with an elastic waist, if made from any work-appropriate fabric — cotton, linen, ponte, you get the idea — are great, as long as they still look like slacks. We’ll even give nice leggings a pass, as long as your butt is covered.

Wear your crop tops — the kind that show off your midsection — literally anywhere else. Except maybe church.

If you aren’t sure, then you don’t — even those cool formal shorts-suits. As for skorts: They’re appropriate if fully encircled by a skirt. And if they aren’t literally for tennis.

Same goes for Crocs and athletic slides. (If you would wear it to a pool party, don’t wear it to the office.) Colleagues shouldn’t have to see your entire foot — and they shouldn’t have to hear you thwack thwack thwack all the way to the break room, so make sure you give your mules a listen before you wear them to the office.

As long as your toenails are neat and tidy. And as long as the shoe-to-foot visibility ratio remains tipped in the balance of the shoe. “Anything that starts to really have the majority of your foot exposed, I think, starts to become questionable,” Post says.

If you work at a fancier office, you might need to build a tie collection. Don’t sleep on thrift stores, which can carry vintage luxury brands with fun and/or timeless patterns. It is fine (even cool) to make your tie pattern clash with your shirt pattern, but keep one of them understated. Also: Fat double knots don’t look as elegant as you think (unless you’re Steve Harvey).

The higher the rise, the safer for work; we all have to bend over now and again. Big, trendy, high-waisted slacks are a great choice (just don’t wear them so long that you trip while sprinting to catch the bus).

If your calves (or anything else) are bulging out, your pants are too tight.

“If your shirt has a straight hemline, then it can be worn untucked,” Post says. You can break this rule if the rest of your outfit is formal enough to compensate. (Gen Z has been experimenting with untucked shirts in interesting ways.) But even if a shirt’s marketing boasts of its untuckability, resist it.

“A lot of people don’t spend time ironing these days,” Post says. “If you’re not buying wrinkle-free fabrics, then the iron is really a must.” You can do it while you watch TV or listen to podcasts. A handheld steamer works, too.

They’re okay any day of the week if your office dress code is business casual. A straight-leg, non-ripped, not-too-tight and not-too-baggy pair can look smart and put-together.

A quarter-zip sweater, knit from actual wool from a sheep? Great. An office-wear classic. A quarter-zip sweatshirt, less so. As a rule, if you’re looking for ways to incorporate trendy outdoorsy gear into your work wardrobe, think natural fibers, not performance fabrics.

They can bring a whole outfit together — or ruin one, if you wear the wrong pair. It’s okay to show your socks. It’s okay to wear quirky socks. It is not okay to wear the same socks you wear to the gym. And once your socks get droopy, ditch ’em.

Save your shoulders. But if you can buy it at the back-to-school section of a big-box store, it’s probably not professional.

You can carry a work bag and a gym or tote bag. Any more bags would be too many bags.

Clean athletic shoes with a flat bottom — think Sambas, Onitsuka Tigers, Air Force 1s — are acceptable office wear. Post, a self-proclaimed sneakerhead, says she looks for sneakers that are “made of nice materials,” such as suede, with interesting colors and patterns, but that “don’t have a lot of logo and branding on them.”

Luxe loafers! Fancy flats! You can find an option for any outfit. Do not resign yourself to bunions and plantar fasciitis.

Save them for the club.

Reach for a slightly thicker or softer fabric than your standard-issue Hanes or Gildan. “It shouldn’t look worn,” Post says. “It should look fresh and crisp and clean. ”Tread carefully with logos, words and any nonabstract images. (A Uniqlo tee with a Matisse painting? Fine. A Uniqlo tee with a cartoon character? Probably not.) Tuck it in. Put a blazer over it for some extra reassurance.

Being new to a job, being new to the workforce, returning to the office or participating in a work event are all acceptable occasions to ask for some guidelines. Kimberly Carney, the founder and CEO of the shopping app FashWire, appreciates knowing that employees are thinking about how to present themselves: Ahead of a recent off-site event, a new team member “texted me and said: ‘Hey, is there a dress code? What should I wear? What’s appropriate?’” Carney says. “I thought that was great.

Make sure it’s a reflection of you or communicates your ambitions. If a uniform is too mundane but you don’t want to have to think too hard about getting dressed, then go with a formula — i.e., jeans, T-shirt and blazers of different colors, or long dresses in different patterns. Find what works for you, and buy it in multiple fabrics or colors.

“We have this slide in our business-etiquette seminars that’s like, nothing too short, too long, too tight, too baggy, too sheer, too wrinkled,” Post says. The “not toos” are “very useful in terms of keeping you in line while still being able to express yourself.”

The thickness of straps on your dress or top will be dictated by the creativity of your industry. As for cleavage: Post knows that, for some women, it’s unavoidable unless they wear something up to their neck — and she doesn’t want women to feel like they have to hide.

“But I think we try not to make that, like, ample cleavage,” she says. “Once you’ve been an adult for a number of years, you see the reactions to how you dress. … I’m trying to be delicate here.”

Start by making sure you’re showered, deodorized and smelling neutral. (Take it easy on the perfume and cologne.) Make sure your clothes are laundered and tidy. Then start thinking about your outfit.

Little vests are so hot right now. Especially worn as sleeveless tops! But wearing them “model off-duty” style is a riskier bet than the trusty ol’ Bilbo Baggins.

A sack of a dress that covers you from collarbone to toe is comfortable, modest and easily accessorized. You don’t need to stick to those sheath dresses that make everyone look like a TV anchor. But any shape of dress that makes you feel confident is probably fine. You can probably even wear a cocktail dress to work if you wear it with masculine, flat shoes.

Anything that would win a prize at the Kentucky Derby should be left at home.

Think ahead about how you’ll feel taking the whole thing off to go to the bathroom. This goes for people of all genders and bathroom usages. And make sure you can zip it up without assistance.

Pop those comfortable commuter shoes off in the bathroom, under your desk or while in the elevator alone. Again: We don’t want to see your whole foot.

Just be proud you actually packed your lunch.

Sometimes pairing a blazer with dress shoes might be too buttoned-up. Or wearing a T-shirt with your Sambas would be too casual. Remember the humble leather boot: not too serious, but not too vulgar. A quiet pair of all-black Chelseas — with comfortable soles — might be right for those in-between days.

You can absolutely wear a suit every day, especially if you are in a rush. It’s a shocking shortcut: You barely have to think about it, yet you look totally pulled together.

In overly air-conditioned offices, it’s more elegant than a cardigan or a hoodie. Use it as a blanket if your legs are cold, or throw it over your shoulders if you’re sleeveless.

Coffee spills and wardrobe malfunctions come for us all, usually right before an important meeting. Stash a supply kit in your desk. That includes gear for bad hair days: A claw clip, a few elastics, some bobby pins and a fun barrette should do it. Bonus points for a small hairbrush (but don’t use it at your desk).

You know — the person who insists on wearing the same clothes they would at home because they’re doing the same job they could do at home. Dress for the job you want, even if the job you want has a work-from-home option.

If you thrift from eras when office dress codes were more closely defined, your office attire will always be appropriate. A vintage skirt suit from the ’90s or a prim dress from the ’60s gives you a cool story to tell when someone gives you a compliment. And you probably won’t have to worry about them being too short, too tight, too anything.

Don’t be surprised when your “office siren” or “mob wife” look gets blank stares from your less-online co-workers. “If you need a hashtag to explain it, you might not want to wear it to your quarterly review,” Carney says. (And film your #OOTD before you commute in.)

“Not two or three rules. And be careful about which rule you break,” Post says. “I think rules around color and style are easier to break than rules around length and sheerness, things like that — anything that would expose the body more.” Cleanliness, too, is an unbreakable rule. But with intentionality, all of the other ones are up for grabs. Play with pattern. Be quirky.

That’s the rule to repeat when you wake up a little late, are staring into your closet, hate your clothes and have reached an impasse: crisp white shirt (you can never own too many), literally any pants, one fun piece of jewelry or a bright shoe.

Source: The Washington Post, 17 June, 2025
Maura Judkin, Ashley Fetters Maloy, Rachel Tashjian and Jesús Rodríguez

By Stacy Burnett
Stacy Burnett Strategist, Content Engagement