2006 New York Code - Contributions.

 
    §  4604.  Contributions.  (a)  The  participating  employees,  or  the
  employer, or both may contribute to the funds  of  the  system  and  the
  rates  of  contribution shall be fixed by the trustees upon the basis of
  actuarial recommendations and shall be adequate to support the  benefits
  granted.
    (b)  The  trustees  may,  with  the  approval  of  the superintendent,
  increase or decrease the rates of contribution whenever such  action  is
  deemed  by  them  necessary  to  preserve the solvency and equity of the
  system.