1. (a) School year--For purposes of employment after retirement, a twelve-month period beginning on September 1 and ending on August 31 of the calendar year.
2. (b) Substitute--For purposes of employment after retirement, a person who serves on a temporary basis in the place of a current employee(s). A substitute may be paid no more than the daily rate of pay set by the employer. Effective September 1, 2016, a substitute includes a retiree who serves in a vacant position for no more than 20 days. A retiree may serve as a substitute in more than one vacant position each school year provided the retiree serves no more than 20 days in each vacant position. In no event may a retiree be considered a substitute while serving in a vacant position that was last held by that retiree. Service as a substitute that does not meet this definition is not eligible substitute service for purposes of an exception to forfeiture of annuity payments under §31.13 of this title (relating to Substitute Service).
3. (c) Third party entity--For purposes of employment after retirement, an entity retained by a Texas public educational institution to provide personnel to the institution who perform duties or provide services that employees of that institution would otherwise perform or provide.

Source Note:The provisions of this §31.1 adopted to be effective March 12, 2003, 28 TexReg 2108; amended to be effective October 30, 2003, 28 TexReg 9288; amended to be effective December 29, 2005, 30 TexReg 8700; amended to be effective September 1, 2011, 36 TexReg 5375; amended to be effective May 16, 2016, 41 TexReg 3527.