(a) Disability pension payments shall be made to a retired employee for each month beginning with the month in which the retired employee becomes eligible to receive such pension and ending with the month in which the retired employee ceases to be eligible or dies.
(b) Any disability pensioner who has not attained age 60 shall report to the Board by April 30 each year, beginning in 1972, in a form prescribed by the Board, the total earnings from any gainful occupation or business in the preceding calendar year. The excess of such earnings over 1/2 of the annual rate of compensation, adjusted annually for any increase in the total “Median Usual Weekly Earnings” as published by the U.S. Department of Labor, received before the pensioner developed a disability shall be deducted from the disability pension during the 12 months beginning in July of the year following the calendar year for which earnings are reported, in a manner determined by the Board. If any person received a disability pension for less than 12 months in the calendar year for which earnings are reported, the deduction, if any, shall be determined on a pro rata basis.
(c) Any disability pensioner who was employed as a “police officer” as defined in § 8401 of Title 11 or employed as an officer of the Capitol Police who has not attained age 60 shall report to the Board by April 30 each year, in a form prescribed by the Board, their total earnings from any gainful occupation or business in the preceding calendar year. The excess of such earnings over the annual rate of compensation, adjusted annually for any increase in the total “Median Usual Weekly Earnings” as published by the U.S. Department of Labor, received at the time of the disability shall be deducted from their disability pension during the 12 months beginning in July of the year following the calendar year for which the earnings are reported, in a manner determined by the Board. If any person received a disability pension for less than 12 months in the calendar year for which earnings are reported, the deduction, if any, shall be determined on a pro-rata basis.
(d) Termination of a disability pension on account of recovery from disability shall not prejudice the right of the pensioner to qualify subsequently for a service pension or another disability pension.