The Pennsylvania Workers’ Compensation Act has been amended to recognize mental-mental injuries/post-traumatic stress injuries (PTSD) for first responders. The new law took effect on October 29, 2025.

How Act 121 Benefits Affect Injured Workers in Pennsylvania

Up to the passage of Act 121, Pennsylvania Courts have held that a first responder must prove that there were objective “abnormal working conditions” to establish a mental-mental (PTSD) claim. Because mental-mental injuries are inherently more subjective than physical injuries, the abnormal working condition requirement made it extremely difficult to establish a compensable work injury. Act 121 has eliminated the “abnormal working condition” requirement.

Public Service Workers Covered by Act 121

A first responder is defined in Act 121 as EMS, paid and volunteer firefighters, police officers and peace officers. The injured worker must only establish that the mental injury resulted from a “qualifying traumatic event” sustained within the course and scope of employment.

Common Situations Where Act 121 Benefits Apply

The question is – what constitutes a “qualifying traumatic event?” A “qualifying traumatic event” results from five (5) types of incidents or exposures:

  • Resulting in serious bodily injury or death to any person;
  • Involving a minor who has been injured, killed, abused or exploited;
  • Involving an immediate threat to the life of the first responder/claimant or another individual;
  • Involving mass casualties; and
  • Responding to a crime scene for investigation.

Issues That Can Arise With Act 121 Benefits

Because Act 121 is so new, there is little case law. We anticipate that what constitutes a traumatic event or serious bodily injury will be fiercely litigated. Quatrini Law Group is prepared to represent our clients up to the Pennsylvania Supreme Court to ensure they get the benefits they deserve.

Meet Our Workers’ Compensation Attorneys

Understanding Act 121 Benefits Under Pennsylvania Law

Related Workers’ Compensation Issues We Handle

Frequently Asked Questions About Act 121 Benefits

Who is covered in Pennsylvania under Act 121?

Act 121 applies to first responders who have suffered a mental injury, such as PTSD, from a qualifying traumatic event while working.

How are mental injuries established under Act 121?

There must be a formal diagnosis by a licensed psychologist or psychiatrist under the laws of the Commonwealth for the claim to be compensable. The claim must be filed within three (3) years of the date of diagnosis (not necessarily the date of the traumatic event)

How long do benefits last under Act 121?

Benefits are payable for no more than 104 weeks under Act 121. The question to be determined is whether, at the conclusion of the 104 weeks, the injured worker is able to file for benefits under Section 301(c)(1) or Section 301(c)(2) of the Act and prove an “abnormal working condition” for ongoing benefits.

Get Help With Act 121 Benefits in Pennsylvania

If you believe you may be covered by Act 121, send us a detailed summary of your “qualifying traumatic event” or “events”, and we will do an initial analysis, without charge. Contact Quatrini Law Group online or at 888-534-6016.