California Code, Labor Code - LAB § 5276

(a) Arbitration proceedings may commence at any place and time agreed upon by all parties.

(b) If the parties cannot agree on a time or place to commence arbitration proceedings, the arbitrator shall order the date, time and place for commencement of the proceeding. Unless all parties agree otherwise, arbitration proceedings shall commence not less than 30 days nor more than 60 days from the date an arbitrator is selected.

(c) Ten days before the arbitration, each party shall submit to the arbitrator and serve on the opposing party reports, records and other documentary evidence on which that party intends to rely. If a party intends to rely upon excerpts of records or depositions, only copies of the excerpts shall be submitted to the arbitrator.