Western Business Attire (often abbreviated WBA) is the standard dress code required by the majority of Model United Nations conferences during committee sessions, opening and closing ceremonies, and most social events outside of designated themed nights. It is intended to mirror the conventions of professional diplomatic practice at the UN Secretariat and in foreign ministries, signaling that delegates should treat committee as a serious working environment.
Typical expectations include:
- Suits in conservative colors (navy, charcoal, black, or grey), worn with a collared dress shirt and tie, or a blouse.
- Skirt suits or pantsuits, dresses of appropriate length, or blazer-and-trousers combinations.
- Closed-toe dress shoes; ties are commonly expected when wearing a suit jacket with a shirt.
- A neat, ironed, and professional overall appearance.
Most conferences explicitly discourage jeans, sneakers, t-shirts, shorts, hats, and overly casual or revealing clothing during formal sessions. Some conferences relax the standard to business casual on the final day or during crisis committees that run overnight.
Delegates from outside Western contexts are almost always permitted to wear national or cultural formal dress of equivalent formality (for example, a sari, áo dài, agbada, hanbok, or thobe) as a recognized alternative; major circuits including the National Model United Nations (NMUN), Harvard WorldMUN, and Harvard National Model United Nations (HNMUN) state this in their delegate handbooks.
The dress code is enforced by chairs and conference staff, and persistent violations can affect a delegate's eligibility for awards, since professionalism is frequently a scored or informally weighted criterion. Beyond compliance, WBA serves a pedagogical purpose: it trains students in the conventions of professional self-presentation that they will encounter in internships, diplomatic service, and corporate or NGO work. Conference websites usually publish the exact dress policy in their delegate preparation guide, and delegates should check it before traveling.
Example
At HNMUN 2024 in Boston, delegates were required to wear Western Business Attire or equivalent national formal dress for all committee sessions held at the Sheraton Boston Hotel.
Frequently asked questions
Most conferences expect a tie when wearing a suit jacket and dress shirt, though some explicitly allow ties to be removed during long sessions or unmoderated caucuses. Always check the specific conference's dress code.
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