The PA Bureau Workers Compensation provides that a claim for compensation must be filed within 3 years of the date of injury. For a traumatic injury, the statutory time limitation begins to run from the date of injury. For a latent condition, it begins to run when an injured
employee with a compensable disability becomes aware, or reasonably should have been aware, of a possible relationship between the medical condition and the employment. Where the exposure to the identified factors of employment continues after this knowledge, the time for filing begins to run on the date of the employee’s last exposure to those factors.