(a) If an employee who has been hired or is regularly employed in the state receives personal injury by accident arising out of and in the course of such employment outside of this state, he, or his dependents, in the case of his death, shall be entitled to compensation according to the law of this state.
(b) Any employee who has been hired outside of this state and his employer shall be exempted from the provisions of this division while such employee is temporarily within this state doing work for his employer if such employer has furnished workmen’s compensation insurance coverage under the workmen’s compensation insurance or similar laws of a state other than California, so as to cover such employee’s employment while in this state; provided, the extraterritorial provisions of this division are recognized in such other state and provided employers and employees who are covered in this state are likewise exempted from the application of the workmen’s compensation insurance or similar laws of such other state. The benefits under the Workmen’s Compensation Insurance Act or similar laws of such other state, or other remedies under such act or such laws, shall be the exclusive remedy against such employer for any injury, whether resulting in death or not, received by such employee while working for such employer in this state.
A certificate from the duly authorized officer of the appeals board or similar department of another state certifying that the employer of such other state is insured therein and has provided extraterritorial coverage insuring his employees while working within this state shall be prima facie evidence that such employer carries such workmen’s compensation insurance.