Does this decide whether my grievance is valid?

No. The rule itself says FMCS is not adjudicating the underlying arbitrability dispute, only screening whether it has authority to provide a panel. The practical effect is the same for a blocked grievance: no arbitrator gets assigned, and the case stalls at the referral stage.

Which agencies are affected?

Agencies named in Executive Order 14251 and its August 2025 follow-on, which excluded 40-plus agencies from the federal labor-relations program. Confirmed major names include all of DoD, VA, State, Justice, USCIS, ICE, EPA, FDA, and CDC. CBP was already outside the program under separate authority. Check the executive orders for your agency's exact status.

What is the MSPB trap for stalled grievances?

If your grievance challenges an adverse action like a removal or long suspension, you generally had to choose between the grievance route and an MSPB appeal, and the MSPB clock is 30 days. An employee whose chosen grievance path now stalls may find the MSPB window already closed. Anyone facing a new adverse action at a covered agency should get advice before choosing the grievance route.

Can the union fight a declined panel?

Yes, through an unfair labor practice charge at the FLRA, which has a six-month filing deadline and a long timeline, and through the pending litigation over the executive orders and the FMCS policy itself. AFGE sued FMCS over the earlier informal version of this policy, and that case was active when the rule published.

New FMCS Rule: What Happens to Your Pending Grievance

Q: What did FMCS change in August 2026?

An interim final rule effective August 4, 2026 (91 FR 49273) lets FMCS conduct threshold determinations before issuing arbitrator panels. For grievances at agencies covered by the 2025 anti-union executive orders, FMCS can request documentation and then decline a panel, hold the request in abeyance, or proceed. Public comments are open through September 3, 2026.

Last Updated: August 12, 2026 Reading Time: 8 min

A grievance that reaches arbitration needs an arbitrator, and the agency that supplies arbitrator panels just gave itself the power to say no. An FMCS interim final rule effective August 4, 2026 formalizes "threshold determinations": before issuing a panel, FMCS can screen whether the grievance comes from an agency covered by the 2025 anti-union executive orders, and decline if it decides it lacks authority. If your grievance is pending at a covered agency, here is what actually happens to it.

What FMCS Does, and What Changed

In federal-sector labor relations, when a union invokes arbitration under a contract's grievance procedure, the parties typically get their arbitrator from a panel supplied by the Federal Mediation and Conciliation Service. FMCS has historically been plumbing: you request a panel, you get a panel.

In April 2026, FMCS quietly began screening panel requests from agencies implicated in the 2025 anti-union executive orders. The August 4 interim final rule codifies that practice into 29 CFR Part 1404. Under the rule, FMCS may request documentation about the grievance, and then issue the panel, decline it, hold it in abeyance, or take other action.

The rule is explicit that FMCS is not adjudicating whether the grievance is actually arbitrable. It frames the screening as FMCS checking its own authority. For the employee waiting on a stalled grievance, that distinction is cold comfort: either way, no arbitrator arrives.

Who Is Covered

The screening applies to grievances arising at agencies covered by Executive Order 14251 (March 2025) and its August 2025 follow-on order, which together excluded more than 40 agencies from the federal labor-relations program on national-security grounds.

Confirmed major names: the entire Department of Defense (roughly 750,000 civilians), VA, State, Justice, USCIS, ICE, EPA, FDA, CDC, and BLM, with the 2025 follow-on adding NASA, the National Weather Service, and the Patent and Trademark Office, among others. CBP sits outside the program under separate, older authority. The full roster lives in the executive orders themselves; check your agency's exact status there rather than assuming.

One important carve-out: VA employees currently have extra protection. A federal court has repeatedly ordered VA to keep applying the AFGE Master Agreement, including its grievance procedures. We cover that fight in VA Union Contract: What the Third Court Ruling Protects.

The MSPB Election Trap

Here is the detail that can cost someone their job remedy, and it has gotten almost no coverage.

For serious adverse actions (removal, suspension over 14 days, demotion), covered employees generally must elect a route: the negotiated grievance procedure or an MSPB appeal. You pick one. The MSPB window is 30 days from the action's effective date.

An employee who elected the grievance route months ago, whose case is now waiting on an FMCS panel that may never come, cannot simply switch to MSPB. The 30 days are gone. The election was made.

Going forward, the calculus changes: an employee at a covered agency facing a new adverse action should think hard before choosing the grievance route while this rule stands, and should get union or legal advice about a protective MSPB filing inside the 30-day window. The grievance procedure that looked faster and cheaper in 2024 can now dead-end at the panel-request stage.

What You and Your Union Can Still Do

FLRA unfair labor practice charge. The union can file a ULP under 5 U.S.C. § 7116 arguing the agency (or the government) is unlawfully refusing to process grievances or honor the contract. The filing deadline is six months from the violation; realistic timelines run one to three years.

Protective MSPB filing. For adverse actions where MSPB jurisdiction exists and no binding election has been made, filing within the 30-day window preserves the route that still has an independent adjudicator. This is exactly the kind of decision to make with a representative, not from a blog post.

Wait on the litigation. AFGE sued FMCS over the April informal policy (AFGE v. FMCS, D.D.C.), and the broader EO 14251 challenges are moving in multiple circuits. The interim rule looks like FMCS's attempt to put regulatory footing under a practice already in court. A ruling against the EOs or the policy would revive stalled grievances.

File a comment. The rule is interim-final, meaning it took effect without advance notice but must take public comments, open through September 3, 2026. Unions and employees can put objections on the record; a future court will read that docket.

What to Do This Week If Your Grievance Is Pending

Ask your local where your case actually sits. "Waiting on arbitration" now has two very different meanings: panel issued, or panel request stalled at FMCS.
If it challenges an adverse action, map your election status. Know whether an MSPB route was available, whether it was waived, and when the window closed.
Keep every deadline alive. Nothing about this rule pauses contractual timelines on your side. File and respond on schedule.
Document your damages. If a stalled grievance involves back pay or a removal, keep records current. Remedies in eventual litigation depend on them.

If the endgame at your agency is workforce restructuring rather than a single dispute, know your exit numbers too: the Severance Pay Calculator shows what an involuntary separation would pay.

Frequently Asked Questions

What did FMCS change in August 2026?

An interim final rule effective August 4, 2026 lets FMCS screen arbitration-panel requests at agencies covered by the 2025 anti-union executive orders. It can request documentation, then issue, decline, or hold the request. Comments are open through September 3, 2026.

Does a threshold determination decide my grievance?

No. The rule states FMCS is only screening its own authority, not ruling on arbitrability or the merits. But a declined panel leaves the grievance stalled at the referral stage all the same.

Which agencies are covered?

The 40-plus agencies excluded by EO 14251 and its August 2025 follow-on, including all of DoD, VA, State, Justice, USCIS, ICE, EPA, FDA, and CDC. Verify your agency against the orders' text; coverage is agency- and unit-specific.

What is the MSPB election trap?

Employees who chose the grievance route for an adverse action generally forfeited the MSPB appeal, whose deadline is 30 days. If the grievance now stalls at FMCS, the MSPB window is usually long gone. New adverse actions at covered agencies deserve a hard look at a protective MSPB filing.

Can this rule be undone?

Yes, three ways: the courts (AFGE's suit against FMCS and the broader EO litigation), a future administration rescinding it, or FMCS revising after the comment period. Until then it governs panel requests.

VA Union Contract: What the Third Court Ruling Protects: The court-ordered exception to this rule.
AFGE and NFFE's DoD Bargaining Lawsuit: The lead challenge to the EO this rule leans on.
DoD Union Contract Termination Survival Guide: What to do when contract protections fall away.
Telework Arbitration and the RTO Memo: An arbitration that DID reach an award, and what it won.

Sources: FMCS interim final rule, 91 FR 49273 (FR Doc. 2026-15798) · EO 14251, 90 FR 14553 · GovExec reporting, April and August 2026 · FLRA arbitration guidance