I don't know if anyone's been in this situation and has managed to do anything about it. I divorced my ex 14 years ago when my son was 3. At first I got about £150 a month maintenance because he was quite a low earner but over the years in went up to over £330 which I was happy with, we were obviously earning similar amounts and supporting our son equally and I was able to save for him etc. About 3 years ago though, he just stopped paying, only later telling me that 'no money was due' when I asked why he had stopped paying. He had walked out of his job due to stress. I do sympathise as I had quite serious mental health probs myself and a step down would have been good for my health but I knew I had to keep at it because I had my son to support. He quickly started working again but at a much lower salary and it's gone down now to the point where he's on min wage according to the CMS so I'm getting £130 a month. He's nice and relaxed in his new job according to our son. He has had no change in lifestyle at all and in fact has just bought a brand new car and been on a lovely holiday but he just isn't supporting his son in a meaningful way and I suspect he is receiving some sort of income from his mum who's reasonably well off. I guess in some ways I'm jealous that he has this option because he knows I will pick up the slack. He has offered to buy DS a new Xbox and a laptop for Xmas so he's not selfish with him but, in terms of day to day support he's not interested in paying a decent amount. A few months back DS needed new shoes and he made me pay him back the £50 they cost by deducting it from my maintenance! Is there any way I can get his income investigated? He definitely isn't living a minimum wage life! I also worry it's a bad example to our son to not use his qualifications (chartered accountant) and just live off his mum and still enjoy the kind of life I can't afford even though I work really hard. Don't want DS to think that's any way to live.