There are five people visible in the image. They are all wearing helmets and are engaged in construction work. The person on the left is wearing a blue shirt and a white helmet, while the person next to them is dressed in a yellow shirt and a white helmet. The third person is wearing a green shirt and a white helmet, and the fourth person is wearing a black shirt and a white helmet. The fifth person is standing behind the fourth person and is wearing a green shirt and a white helmet.