5 U.S.C. § 8110
Augmented compensation for dependents
(a)
For the purpose of this section, “dependent” means—
(1)
a wife, if—
(A)
she is a member of the same household as the employee;
(B)
she is receiving regular contributions from the employee for her support; or
(C)
the employee has been ordered by a court to contribute to her support;
(2)
a husband, if—
(A)
he is a member of the same household as the employee; or
(B)
he is receiving regular contributions from the employee for his support; or
(C)
the employee has been ordered by a court to contribute to his support;
(3)
an unmarried child, while living with the employee or receiving regular contributions from the employee toward his support, and who is—
(A)
under 18 years of age; or
(B)
over 18 years of age and incapable of self-support because of physical or mental disability; and
(4)
a parent, while wholly dependent on and supported by the employee.
Notwithstanding paragraph (3) of this subsection, compensation payable for a child that would otherwise end because the child has reached 18 years of age shall continue if he is a student as defined by section 8101 of this title at the time he reaches 18 years of age for so long as he continues to be such a student or until he marries.
(b)
A disabled employee with one or more dependents is entitled to have his basic compensation for disability augmented—
(1)
at the rate of 8⅓ percent of his monthly pay if that compensation is payable under section 8105 or 8107(a) of this title; and
(2)
at the rate of 8⅓ percent of the difference between his monthly pay and his monthly wage-earning capacity if that compensation is payable under section 8106(a) of this title .
( Pub. L. 89–554 , Sept. 6, 1966 , 80 Stat. 539 ; Pub. L. 90–83, § 1(53) , Sept. 11, 1967 , 81 Stat. 210 ; Pub. L. 93–416, § 6 , Sept. 7, 1974 , 88 Stat. 1145 .)