Basically I am sure I have a back injury caused by my chair at work. All material in my job is bad for the ergonomics. I measure about 181 cm and I'm using a chair a chair that isn't suitable for my dimensions. We never have a inspection in the workplace for ergonomics and all in this workplace is wrong for my body. Should you report it outside the company to have an inspection?
PD: It's a company with few workers but that does not take heed of the health of its workers. All my colleagues are in the same situation.