We still don't have enough information.
He had an accident at work which resulted in him being permanently disabled. Normally this results in a (fair) dismissal on ground of capability (he can't work any more) with a pay-out, as well as the opportunity to pursue the employer's insurer for compensation for loss of future earnings. Sometimes such claims take a few years before being presented because it needs to be established the long-term medical situation.
Is this process not being followed through by your husband?