CA Gov't Code Section 17558.8

(a)

The commission may, on its own initiative, consolidate incorrect reduction claims filed with the commission by different claimants under the same mandate if all of the following apply:

(1)

The same method, act, or practice is alleged to have led to the reduction in each claim, and all of the claims involve common questions of law or fact.

(2)

The common questions of law or fact among the claims predominate over any matter affecting only an individual claim.

(3)

The consolidation of similar claims by individual claimants would result in consistent decisionmaking by the commission.

(b)

The commission shall adopt regulations establishing procedures for consolidation of incorrect reduction claims pursuant to this section and for providing a hearing on a consolidated claim.