Prefer to read in Dutch? Click here
Many of us wear a blazer when we go to the office, either daily or just for presentations. But how should a blazer be worn at work? In this article, I’ll cover details such as whether to button up or not, how long your sleeves should be, and more specifics.

This is how you should wear a blazer at work
Single-breasted blazers
When wearing a single-breasted blazer, buttoning depends on how many buttons it has. If it has one button, keep it fastened. For two buttons, always leave the bottom one undone. The same rule applies for three buttons: always fasten the middle one, and the top one is optional.
These rules only apply when you’re standing, such as during a presentation or important conversation. Once you sit down, undo the buttons. Of course, you can keep your blazer open all day, but this is only suitable in informal work environments. If you want to look polished and follow proper etiquette, keep the blazer buttoned while standing.
Double-breasted blazers
When you wear a double-breasted blazer with four buttons, button all of them, at least the ones that have buttonholes. Sometimes, blazers have extra buttons without buttonholes; those are purely decorative.
According to official etiquette, it should remain buttoned even when sitting. Let’s be honest, a double-breasted blazer can look odd when worn open.
If your blazer has six buttons, you can leave the bottom right one undone. This is optional, not mandatory.
Back vent
I’ve mentioned this before in previous articles, but it’s worth repeating. It’s important to cut the stitching on the back vent(s).
Whether your blazer has one or two vents, you must always cut the thread holding them together. Manufacturers add this thread to keep the vent closed during production and transport.
After buying the blazer, cut and remove the thread. If you don’t, the bottom will form an awkward bulge, even though the vent is designed to make the fabric drape properly on your body.
Sleeve length
The sleeves of your blazer should end at your wrists, right where the wrist bone meets your hand. The shirt or blouse underneath should extend about a centimeter beyond the blazer.
Pockets
If your blazer has flap pockets, make sure the flap sits over the pocket and is not tucked in. Tucking it in gives a messy appearance.
Whether your blazer has flaps or not, official etiquette says you shouldn’t put anything in the pockets. Although pockets are made for holding items, carrying things like keys or a wallet in your blazer creates an awkward bulge around your midsection. The same goes for the inside pocket.
In practice, small items are fine, as maintaining both the fit and appearance of your blazer is key. Carrying a staff ID, bank card, a single key, or a business card shouldn’t be a problem.
What’s your best tip for wearing blazers at work?
Best regards,
