2. The boss has a company, and your uncle is an employee of the company. You can apply for work-related injury identification and go through work-related injury treatment procedures.
Otherwise, you can only go to court and ask the boss for compensation.
3. How much is the compensation? Work-related injuries shall be paid by the work-related injury insurance fund in accordance with the Regulations on Work-related Injury Insurance.
If it's not a work-related injury, the boss will pay the bill.