(a) Any member under age sixty having at least nine years of credited service who becomes totally and permanently disabled for service, either mentally or physically, from any cause other than duty disability shall be entitled to a non-duty disability retirement annuity.
(b) The annuity shall begin to accrue upon termination of payments to the employee by the Government of amounts representing full compensation, part compensation or any other form of compensation; provided, that if written application for the annuity is not filed with the System within sixty days of the date of termination of the compensation payments, the annuity shall begin to accrue as of the day sixty days prior to the receipt of the application.
(c) A member shall be considered totally and permanently disabled only after the System has received (1) written certification by at least two licensed practicing physicians, selected by the System, that the member is totally and likely to be permanently disabled from further performance of the duties of any assigned position in the service of the employer, and (2) written certification from the employer that the member has been separated from the service of the employer because of a total and permanent disability of the nature as to reasonably prevent further service to the employer, and as a consequence is not entitled to compensation from the employer.
(d) The amount of disability annuity is equal to 1.4% of average compensation for each year of credited service at a date of disability, subject to a minimum of 14% of average compensation and a maximum of 42% of average compensation in an amount not to exceed $65,000 per annum exclusive of any cost of living annuity, bonuses or adjustments.
(e) Any payment by the employer representing salary or part salary shall be applied to reduce the amount of the annuity payable to the member.
(f) The recipient of a non-duty disability retirement annuity shall provide earnings and medical information as requested by the System to verify disability claims. If the recipient fails to provide the requested information, the non-duty disability retirement annuity must be discontinued until the time as the requested information is provided. When the requested information is provided, the non-duty disability retirement annuity resumes.