20 CFR §10.416

If compensation to a beneficiary is terminated, the amount of compensation payable to one or more of the remaining beneficiaries may be reapportioned. Similarly, the birth of a posthumous child may result in a reapportionment of the amount of compensation payable to other beneficiaries. The parent, or someone acting on the child's behalf, shall promptly notify OWCP of the birth and submit a copy of the birth certificate.