But if he can't overcome his addiction, it's likely to be difficult for him even if he can earn the same salary as his old department. This may be about overcoming the problems that he had in the past and it seems he really needs help from other people who can provide support for him to get out of his problems. The company can only help as needed while the rest is up to him because the company can't do much for him.
He must be accompanied as support to motivate him out of his addiction, but it will be difficult if he is inconsistent for treatment until he recovers, the company only supports him if he intends to return to being a normal human being without gambling addiction. But the company is not averse to the worst decisions if it does not stop gambling.