SAN FRANCISCO, Dec 19 - California Governor Arnold Schwarzenegger declared a fiscal emergency on Friday to call lawmakers into another special session to tackle the state’s weakening finances, and separately ordered state officials to prepare to furlough and lay off employees to cut costs.

His two actions mark a dramatic escalation in the budget battle waged in recent weeks in Sacramento, the capital of the most populous US state and world’s eighth-largest economy, as its revenues fall harder and faster than expected.