Legal Question in Family Law in California

One does not pay normally for half of the insurance cost, but only for 1/2 of the unreimbursed medical, dental, vision, orthodontic or therapy costs. But, in no case, would your wife's partner need to be reimbursed. Good luck!

I completely disagree with Mr. Schneider - there is no automatic legal rule on this, only presumptions as to what is appropriate. What decides it is your current custody and support order/judgment. If it is unclear, then you have to go back to court for a modification. I can tell you, though, that no court is going to order two duplicate policies be paid for by either of you. So if you can't sort it out between you to keep the double coverage, the court is going to order one policy cancelled as to the children, or paid for entirely by the one who wants to keep it.