Relating to workers' compensation for occupational diseases that certain workers suffer.

Requires city that provides disability or retirement system for firefighters and police officers by ordinance or charter that is not subject to workers' compensation law to apply provisions requiring presumption that condition or impairment of health is occupational disease that results from employment if firefighter took physical examination upon gaining or during employment that failed to reveal evidence of occupational disease that existed before employment. Requires that city's denial of claim for compensation for occupational disease must be on basis of clear and convincing medical evidence that condition or impairment of health is unrelated to employment. Establishes that time limitations for filing claim are one year from date claimant first discovered or should have discovered occupational disease, one year from date claimant becomes disabled or is informed by physician that claimant is suffering from occupational disease or one year from date that worker's beneficiary first discovered or reasonably should have discovered that cause of worker's death was occupational disease.