Yes, I think wearing formal clothes is important in the workplace. It makes everything look more professional and serious. When you meet clients, it's good to look smart.

No, I don't think formal clothes are always necessary at work. Many places now let you wear casual clothes because it's more comfortable, and when people are comfortable, they can work better.

It depends on where you work. Some companies need you to dress up, especially if you meet clients. But other places might be more relaxed about clothes.