He made a false claim that his injury happened at work so that he could get compensation

I had an accident outside of work, and when it became too difficult for me to pay the expenses for my treatment, I claimed that the injury happened at work. On this basis, the company paid the expenses for my treatment. Now I regret what I did, so what should I do?

Praise be to Allah, and blessings and peace be upon the Messenger of Allah:

You have to tell your bosses what really happened, and offer to repay what they spent on you because of the treatment, or to let them dock it from your wages. If they let you off – and if they are in a position to do so – then you need do nothing more. You are not free from blame unless they forgive you or let you off, or you repay them. And ask your Lord for forgiveness for your lying and wrongdoing.