Are Shell operators tired in the paint factory?

Shell operators in the paint factory are very tired. Paint factory is a small chemical plant, generally there will not be too many workers. Belongs to small and medium-sized enterprises. Working in such an enterprise is particularly tiring. When there are many orders, because there are few employees in the factory, the boss will ask you to work overtime and sometimes work at night. Many people can't accept this kind of work. Moreover, the paint factory is not a fine chemical product, and a lot of work is heavy physical labor. So the shell operators in the paint factory are very tired.