The state Supreme Court is considering a major overhaul of Michigan's child support rules.
The new rules would give a financial break to parents who care for their children less than a third of the time.
The revisions would apply to many of the more than 800,000 active court orders affecting the parenting duties of divorced fathers and mothers.
Current guidelines give parents a break on the amount of child support they pay if their children spend at least 128 nights with them.
At least three-fourths of all parents paying child support, most of whom are men, would become eligible for the reduction.
Fewer than 20-percent are eligible under current guidelines.