(1) The employee has acknowledged in writing that the claimant is his or her son or daughter; or

(2) A court has decreed that the employee is the mother or father of the claimant; or

(3) A court has ordered the employee to contribute to the claimant's support because the claimant is the employee's son or daughter; and,

(4) Such acknowledgment, court decree, or court order was made not less than one year before the employee became entitled to an annuity, or in the case of a disability annuitant prior to his or her most recent period of disability, or in case the employee is deceased, prior to his or her death. The written acknowledgment, court decree, or court order will be considered to have occurred on the first day of the month in which it actually occurred.

(1) The claimant has submitted evidence acceptable in the judgment of the Board, other than that discussed in paragraph (c) of this section, that the employee is his or her natural mother or father; and

(2) The employee was living with the claimant or contributing to the claimant's support, as discussed in §§ 222.58 and 222.42 of this part, when -

(1) General. To determine whether a claimant is the natural child of the employee, the state inheritance laws regarding whether the claimant could inherit a child's share of the employee's personal property if he or she were to die intestate will apply. If such laws would permit the claimant to inherit the employee's personal property, the claimant will be considered the child of the employee. The state inheritance laws where the employee was domiciled when he or she died will apply. If the employee's domicile was not in one of the 50 states, the Commonwealth of Puerto Rico, the Virgin slands, Guam, American Samoa, or the Northern Mariana Islands, the laws of the District of Columbia will apply.

(2) Standards. The Board will not apply any state inheritance law requirement that an action to establish paternity must have been commenced within a specific time period, measured from the employee's death or the child's birth, or that an action to establish paternity must have been commenced or completed before the employee's death. If state laws on inheritance require a court to determine paternity, the Board will not require such a determination, but the Board will decide paternity using the standard of proof that the state court would apply as the basis for making such a determination.

(3) Employee is living. If the employee is living, the Board will apply the state law where the employee is domiciled which was in effect when the annuity may first be increased under the social security overall minimum (see part 229 of this chapter). If under a version of state law in effect at that time, a person does not qualify as a child of the employee, the Board will look to all versions of state law in effect from when the employee's annuity may first have been increased until the Board makes a final decision, and will apply the version of state law most favorable to the employee.

(4) Employee is deceased. The Board will apply the state law where the employee was domiciled when he or she died. The Board will apply the version of state law in effect at the time of the final decision on the application for benefits. If under that version of state law the claimant does not qualify as the child of the employee, the Board will apply the state law in effect when the employee died, or any version of state law in effect from the month of potential entitlement to benefits until a final determination on the application. The Board will apply the version most beneficial to the claimant. The following rules determine the law in effect as of the employee's death: