Two local unions of the American Federation of Government Employees filed suit Tuesday against the EPA and administrator Lee Zeldin, alleging the agency illegally terminated a collective bargaining agreement that was supposed to run through June 2028. The contract, ratified in June 2024, included a scientific integrity provision designed to shield EPA workers from retaliation — a provision that now looks prophetic. The termination traces directly to a March 2025 executive order aimed at eliminating collective bargaining agreements for more than 1 million federal workers. The EPA acted on that order in August 2025, voiding the contract midstream. The union's lawsuit argues the agency failed to justify the termination and was motivated by a desire to suppress political dissent — a first amendment claim that raises the stakes well beyond standard labor law. The retaliation allegation has teeth. Earlier this month, an arbitrator ruled in favor of AFGE Local 704 after the EPA disciplined 139 workers who signed an open dissent letter. Internal emails revealed a top EPA attorney had warned the agency about its legal risk before the discipline was imposed. The agency did it anyway. The arbitrator ordered records wiped, back pay provided, and the union's attorney fees covered. The workforce numbers tell their own story. Since January 2025, roughly 4,000 workers have left the EPA through resignations, early retirements, and layoffs, shrinking the agency to about 12,700 employees — a 20% reduction. Federal News Network reporting shows this has measurably reduced the agency's scientific research output. Justin Chen, president of AFGE Council 238, frames the fight in mission terms: workers who are gagged and stripped of rights cannot serve the agency's mandate to protect human health and the environment. The EPA declined to comment, citing its practice of not commenting on pending litigation. The legal question at the center is whether an executive order can unilaterally override a negotiated, ratified contract with years remaining on it. The arbitration win on the dissent letter suggests adjudicators are skeptical of the administration's legal position. But arbitration rulings and federal court rulings operate on different tracks, and the administration has shown willingness to absorb adverse rulings while continuing to press its agenda. What is at stake is not one union contract at one agency. The executive order targets collective bargaining across the federal workforce. If the EPA termination stands, the template is set for every other agency. If it falls, the administration faces a legal constraint on one of its most aggressive federal labor plays.