As used in this chapter, "service" means an action or actions to be performed under authority of the state, a state agency, a body corporate and politic, a state university, a unit of local government, or an agency of a unit of local government permitted by law to be done by its chief officer or governing or legislative body for the convenience or necessity of its citizens, but not including any action that constitutes the exercise of its discretionary powers, an exercise of state sovereignty, or the taking of legislative, quasi-legislative, judicial, or quasi-judicial action.
IC 5-22-6.5-2