48. The weekly lump sum is paid to either parent, as they choose. The amount paid as such to a parent may not be claimed by the other parent.
If they make no choice or disagree, the weekly lump sum for unused weeks is paid to the parent who first receives benefits in connection with the birth or adoption. If both parents receive their benefits beginning in the same week, the weekly lump sum is granted to the parent with the higher average weekly earnings.
Despite the first paragraph, the weekly lump sum is paid to each parent if custody of the child is shared, provided that each parent is entitled to the increase and receives benefits.