Provides for workers' compensation coverage of certain counseling services for first responders and provides that certain mental health related communications are confidential.

S 4590 requires New Jersey employers of first responders (law enforcement officers and paid firefighters) to provide workers' compensation coverage for up to 12 hours of confidential counseling after a critical incident, with up to 24 additional hours permitted if a mental health professional deems it necessary. Critical incidents include events like gunfights, witnessing serious injuries or deaths, or responding to crimes involving minors. Employers must cover these sessions without requiring the use of personal leave during work hours, and all counseling must be completed within one year. The bill also protects confidentiality of mental health communications between first responders and peer support teams or resiliency program officers, except in cases of imminent risk to self or others.