Unhealthy and dangerous
terrible unhealthy and dangerous
Low wages and dangerous working conditions
The conditions were dusty dirty and dangerous. They were very unhygenic and deseases were easily passed through people working close together all crammed up!
progressives
unions
Factory work was difficult and dangerous but it paid well.
Industrialization led to dangerous working conditions, filthy living conditions, child labor, etc.
If they are working on biochemistry subjects, they sometimes have to. Based on the application to real life however. If he is working with potentially dangerous chemicals, then he is at many times required to use the disinfectants. However, this question can be taken in many different ways, for example, if a chemist would use disinfectants when he is not at work, or is not practicing chemistry, would also apply to this question.
im pretty sure its dangerous working conditions around large machines
creating deep-rock mining shafts where working conditions were dangerous and unpleasant
some proper working conditions are respect to the employees from the employer, fair wage, safe working place and a bit more