What were the hazards and uncertainties of organized industrial labor?

Organized industrial labor in the early days was often very dangerous. Moreover, many of the workers did not know for how long they would work (in terms of hours per day) nor how long (in terms of the length of their "contract"). In the early days, there were a lot of accidents and medical help was needed for workers who worked in different industrial complexes, however, they were rarely given any. 

Another hazard were different chemicals that were used at the time, but were later found to be unsafe, the workers at the time didn't know that it was dangerous to inhale or be near to, for example. 

Ongoing civil wars western roman empire finally collapsed476 c.e. romulus, the last of theroman  emperors in  the west, was overthrown by the germanic leader odoacer, who became the first barbarian to rule in rome. the order that the  roman empire  had brought towestern  europe for 1000 years was no more.