Business lunches can be an important opportunity to build relationships, discuss business matters, and make a good impression. Good manners can help to create a positive and professional atmosphere, making the lunch more productive and enjoyable for all parties involved. Here are a few tips for good manners during a business lunch: RSVP promptly: If you are invited to a business lunch, be sure to respond as soon as possible to let the host know whether or not you will be able to attend. If you are unable to attend, provide a polite and timely decline. Dress appropriately: Business lunches often have a dress code that is more relaxed than a formal business meeting, but it is still important to dress in a professional and appropriate manner. Avoid clothing that… . . . read more.