(a) In this section, "township" means a special district with territory that only includes a census designated place, as designated by the United States Bureau of the Census.
(b) This chapter applies to a person who:
(1) retires from:
(A) county employment in a county with a population of 75,000 or more;
(B) employment by an appraisal district in a county with a population of 75,000 or more;
(C) municipal employment in a municipality with a population of 25,000 or more;
(D) employment as a firefighter or emergency medical services provider by an emergency services district located wholly or partly in a county with a population of 150,000 or more; or
(E) employment as a firefighter, police officer, or emergency medical services provider by a township with a population of 110,000 or more; and
(2) is entitled to receive retirement benefits from a county, appraisal district, or municipal retirement plan, emergency services district, or township.