2015 New York Laws
RSS - Retirement & Social Security
Article 15 - (Retirement & Social Security) COORDINATED RETIREMENT PLAN
611 - Optional retirement program.

 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.