H.B. No. 3594 seeks to amend the administration of retirement health care plans for firefighters and police officers in certain Texas municipalities by introducing new definitions and provisions. Key changes include the requirement for retirees with less than 360 months of service to continue making monthly contributions to the fund, with an option for a lump-sum payment instead. The bill also outlines the governance structure of the fund, detailing the composition and authority of the board of trustees, and includes protections for fund assets from legal processes, ensuring that health benefits are exempt from garnishment and taxes. Additionally, it clarifies that the act does not provide benefits beyond those explicitly stated.

The bill further stipulates amendments regarding member contributions and benefits, mandating that contributions be made within 30 days of a member's return from unpaid leave. If voluntary contributions are made, municipalities must match the amount they would have contributed had the member not taken leave. It also addresses health and medical benefits for married members, allowing retirees to conditionally waive eligibility and reinstating it upon marriage dissolution. The board is empowered to modify retiree health plans to allow surviving spouses to maintain coverage after remarriage, even if it increases the fund's actuarial unfunded liability. The bill is set to take effect on October 1, 2025.