Today DH got an amended income withholding order in the mail today reducing the amount that he pays by about 17%. We never requested that it be lowered and I'm 100% certain that BM wouldn't have requested it. All I can think is that BM recently quit her previous job and started working at her sister's daycare. She had to tell them that she changed jobs so if she provided an increased income change to friend of the court then perhaps they recalculated the amount that he needs to pay? The thing is, since this is her sister's daycare she could very easily have hidden her actual income (for example by being paid a certain amount legitimately and then having her sister "give" her a few hundred dollars a month or something) and I believe that she really is the kind of person that would try to do that.
The reasons I think that are because when she and DH split up DH was paying her several hundred a month to help support his daughter. Luckily his mom worked at the bank so he had his mom track the money that was being paid out to her, but about 5 months into that BM filed for child support, and tried to get back child support claiming that he hadn't been giving her any money. He proved that he did and she was awarded no back child support, in addition to that she was awarded a monthly child support amount that was lower than what he had been giving her. Another reason is because when he told her that he joined the National Guard her response was "Yay! Now I can go after you for more child support". So anyway if my assumption that she would try something tricky to keep child support from being reduced is wrong then sorry, but I have my reasons.
But anyway, is there any other reason that this would be reduced other than a possible change in her income? For what it's worth it is not the actual child support amount that was reduced it was the "cash medical support" number in the equation that was reduced, leading to a lower overall payment. SD is on state insurance. Any ideas?