A.R.S. § 23-901.02: Liability of last employer; exception

Where compensation is payable for an occupational disease the only employer liable shall be the employer in whose employment the employee was last injuriously exposed to the hazards of such disease but in the case of silicosis or asbestosis the only employer liable shall be the employer in whose employment the employee was last exposed to harmful quantities of silicon dioxide (SiO2) dust during a period of two years or more.