Section 611. Optional retirement program

a.  Any optional retirement
  program authorized by state law which, on the day before  the  effective
  date of this article, would be available to an eligible employee subject
  to the provisions of article eleven of this chapter in lieu of joining a
  public  retirement system of the state, will continue to be available to
  eligible employees subject  to  this  article  during  the  period  this
  article is in effect.
    c.  Nothing  herein  contained  shall  be  construed  as permitting an
  employee who previously elected coverage under  an  optional  retirement
  program to elect coverage under a public retirement system of the state.
    * NB Expires June 30, 2011