Sec. 4.023. UNIFORMED SERVICE. (a) A member of the fund who enters any uniformed service of the United States may not:

(1) be required to make the monthly payments into the fund as required by this Act while the member is engaged in active service with the uniformed service; or

(2) lose any seniority rights or retirement benefits provided by this Act because of that service.

(b) Not later than the 90th day after the date of the member's reinstatement to an active status in a fire or police department, the member shall file with the secretary of the board a written statement of intent to pay into the fund an amount equal to the amount the member would have paid if the member had remained on active status in the department during the period of the member's absence while in the uniformed service.

(c) The member shall make the payment described by Subsection (b) of this section in full within a period after the member's return that is equal to three times the amount of time the member was absent, except that the maximum period for payment may not exceed five years.

(d) If the member does not comply with Subsections (b) and (c) of this section, the member loses all credit toward the member's years of service for the length of time the member was engaged in active service in any uniformed service.

(e) The amount of credit purchased under this section may not exceed the length of the active service in a uniformed service required to be credited by law.

(f) If the member complies with this section and makes all required payments, a municipality to which this Act applies shall make payment to the fund in an amount equal to the amount the municipality would have paid if the member had remained on active status in the department during the member's absence while in the uniformed service.