191.908.  Whistleblower protections — violations, penalty. — 1.  An employer shall not discharge, demote, suspend, threaten, harass, or otherwise discriminate against an employee in the terms and conditions of employment because the employee initiates, assists in, or participates in a proceeding or court action under sections 191.900 to 191.910.  Such prohibition shall not apply to an employment action against an employee who:

  (1)  The court finds brought a frivolous or clearly vexatious claim;

  (2)  The court finds to have planned, initiated, or participated in the conduct upon which the action is brought; or

  (3)  Is convicted of criminal conduct arising from a violation of sections 191.900 to 191.910.

  2.  An employer who violates this section is liable to the employee for all of the following:

  (1)  Reinstatement to the employee's position without loss of seniority;

  (2)  Two times the amount of lost back pay;

  (3)  Interest on the back pay at the rate of one percent over the prime rate.