Is the financial compensation I received after breaking my nose in a work accident permissible or forbidden?

If the worker's injury results from the employer's negligence or dereliction, then the employer guarantees compensation. However, if the employer took the necessary precautions and was not negligent, then they do not guarantee it. And if the injury was due to the worker's negligence, then he is not entitled to compensation, unless the employer pays him a donation or refers him to an insurance company. And if the worker and his employer agree that the employer will bear all that befalls him during his work, then the contract is فاسد (invalid) due to the ambiguity of the wage, and it must be فسخ (annulled), and the worker is entitled to an "اجرة المثل" (a fair wage) for the past period, and he is not entitled to compensation except for what was deducted from his salary for that purpose.