Section 351. Preferred provider organizations; contracts

The  state
  insurance fund, any stock corporation, mutual corporation or  reciprocal
  insurer  authorized  to  transact  the business of workers' compensation
  insurance in this state or self-insurer may contract  with  a  preferred
  provider  organization  to deliver all medical services mandated by this
  chapter, provided such contract takes effect on or after January  first,
  nineteen  hundred  ninety-seven  and  the insurer or the employer has no
  financial interest in the preferred provider organization.  Where  there
  is  a  duty  to  collectively  bargain,  an  employer shall collectively
  bargain the use and implementation of a preferred provider  organization
  with the authorized collective bargaining agent of its employees.