My question involves labor and employment law for the state of: California
I have a labor commission date set to recover an unpaid incentive compensation. My incentive compensation contract/agreement (in writing) does not state if there would be any exclusion of type of business reported; I have the emails to prove when I was first notified that an exclusion would take place: 6 weeks after the end of the Q2, and the employer has denied Q2 incentive compensation.
what California law or code or regulation can I reference that states employer can’t change the terms of incentive compensation retroactively?

