The things we do for love ! This man has been enabled to live a life of giving nothing and taking everything, and at his age that is quite unacceptable. He is clearly using emotional blackmail to ensure the situation continues in his favour. Ask him who else he knows that lives this way ? The SIL needs to ask herself where this will go once their savings run dry and she should be supporting her husbands feelings, not continuing to indulge this selfish, lazy man. A reality check is so needed here. If it continues, the husband is not happy, if it stops the son will not be happy. So there is no easy solution unless this man gets out of Cloud Cuckoo land and gets a job, even if it’s part time initially so he meets them halfway. It shouldn’t be part time but he clearly needs introducing to the real world gently !!