Construction workers are hard workers, that is for sure. They carry heavy bags of sand, prepare concrete and have to lift several times iron, stones and further building materials. Of course machines like jackhammers, bulldozers and computers help construction workers a lot, but it is still not a job to relax all day long. Very common pictures of workers during their break should not be missed though, because they are also part of the everyday life of this particular jobs.
Safety is also a very important issue in this context, as construction workers face a lot of risks due to the heavy machinery. That is why you will find also a lot of images of safety helmets for example.