S 1221 amends Idaho Code Section 59-1302 to revise the definition of "employee" for the state's public retirement system (PERSI). Specifically, it changes the threshold for who qualifies as an employee eligible for retirement benefits, clarifying that individuals working fewer than 20 hours per week are no longer automatically considered employees under the system. This directly affects Idaho public employees whose work hours fall below this threshold, ensuring only those meeting the revised criteria are counted for retirement benefit eligibility. The change aims to align the definition with current employment patterns and streamline administrative processes for the retirement system.