MO HB1588

Defines "relocation" as a change in principal residence of a child 50 miles or more for 90 days or longer, excluding temporary absences.

Requires written notice by certified mail at least 60 days in advance of proposed relocation to any party with custody or visitation rights, including new address, phone number, moving date, reason for move, and proposed revised custody schedule.

Allows relocation to proceed 60 days after notice unless a parent files a motion to prevent relocation within 30 days, with burden of proof on the relocating party to demonstrate good faith and best interest of child.

Requires courts to order frequent and meaningful contact between child and nonrelocating party if relocation is permitted, and to specify how transportation costs are allocated and adjust child support accordingly.

Establishes that failure to provide relocation notice is grounds for modifying custody, ordering child's return, and assessing reasonable expenses and attorney fees against the non-notifying party; violations may also be treated as contempt of court.