If the disability is partial, the United States shall pay the employee during the disability monthly monetary compensation equal to 66⅔ percent of the difference between his monthly pay and his monthly wage-earning capacity after the beginning of the partial disability, which is known as his basic compensation for partial disability.
The Secretary of Labor may require a partially disabled employee to report his earnings from employment or self-employment, by affidavit or otherwise, in the manner and at the times the Secretary specifies. The employee shall include in the affidavit or report the value of housing, board, lodging, and other advantages which are part of his earnings in employment or self-employment and which can be estimated in money. An employee who—
(1) fails to make an affidavit or report when required; or
(2) knowingly omits or understates any part of his earnings;
A partially disabled employee who—
(1) refuses to seek suitable work; or
(2) refuses or neglects to work after suitable work is offered to, procured by, or secured for him;
(Pub. L. 89–554, Sept. 6, 1966, 80 Stat. 536.)