If you're a steward — or thinking about becoming one — you need to know that arbitration cases are the backbone of grievance strategy. In my 20+ years as a letter carrier and my time as a union steward, I've learned that NALC arbitration cases aren't just historical records; they're the precedents that will determine whether you win or lose your member's grievance.

Let me be direct: stewards who win grievances know their arbitration cases. They can reference specific decisions by name and arbitrator. They understand the reasoning behind those decisions. They know how to apply those precedents to their current situation. Here are five landmark decisions that come up repeatedly in steward work — the ones I consider essential knowledge.

1. Mittenthal on Overtime Limits — C-06238

If you handle overtime grievances — and every steward does — you need to know this case by heart. National Arbitrator Richard Mittenthal, in Case No. H4N-NA-C 21, "Fourth Issue" (C-06238), established a principle that arbitrators cite to this day: the 12-hour daily and 60-hour weekly limits under Article 8, Section 5.G are absolutes.

What Mittenthal ruled was unambiguous: full-time employees may neither volunteer nor be required to work beyond 12 hours in a single day or 60 hours in a service week. The only exception is the December penalty overtime exclusion period for ODL/WAL carriers. This isn't a guideline or a suggestion — it's an absolute limit.

Mittenthal went further in a companion case, H4N-NA-C 21, "Third Issue" (C-07323): when a full-time employee reaches 60 hours, management must send them home, even mid-shift. The employee is entitled to the applicable 8-hour guarantee for the remainder of their scheduled day. Management cannot keep a carrier working past 60 hours and deal with the consequences later.

The remedy for violations comes from MRS document M-00859, a 1988 MOU establishing that violations of the 12/60-hour limits entitle the carrier to an additional premium of 50% of the base hourly straight-time rate. National Arbitrator Carlton J. Snow confirmed in C-18926 that M-00859 limits the remedy specifically to this premium.

The April 2023 Contract Talk column covered these cases in detail. Under the 2023-2026 National Agreement (the Nolan Award), Article 8, Section 4.G now provides even stronger protection: for hours worked beyond 12 in a day or 60 in a week, carriers receive pay at 2.5 times the base hourly straight-time rate — with no exceptions, even during December.

Every time management pushes a carrier past 12 or 60, you should be filing. Mittenthal made it clear decades ago, and the new contract made the penalty automatic.

2. Aaron on Office Time — C-03207

National Arbitrator Benjamin Aaron, in Case NC-C-11675 (C-03207), ruled on a principle that protects every carrier during route inspections: even if management can demonstrate that the carrier was regulating their performance, it cannot reduce office time below the average standard allowable time.

This matters because route inspections are where management often tries to shave time off routes. They'll watch a carrier during count week, claim the carrier was working slowly, and then reduce the evaluated office time below what the standard allowances would produce. Aaron said no — there's a floor, and that floor is the standard allowable time.

This case is part of a larger body of route inspection precedent that every steward should know. M-39 Section 242.311 governs how office time is evaluated: management must select the lesser of the average office time during count week or the standard office time allowance. M-39 Section 242.322 prohibits management from selecting street time solely because it's the lower number. And Step 4 settlement M-00242 established that reasonable comfort and rest stops should not be deducted from recorded street time. National pre-arbitration settlement M-00304 confirmed there is no set walking pace and no street standard.

The July through December 2024 Contract Talk columns walked through the entire route inspection process in detail. If your office is facing inspections, those columns and these cases are your starting point.

3. Gamser on Overtime Equitability — NC-S-5426

National Arbitrator Howard Gamser, in Case NC-S-5426 (April 3, 1979), established the remedy standard for overtime equitability violations under Article 8, Section 5. This case defined what happens when management doesn't distribute overtime equitably among ODL carriers.

Gamser ruled that the Postal Service must pay employees deprived of equitable overtime opportunities — but only if management showed "a willful disregard or defiance of the contractual provision." That "willful disregard" language became the standard. It means that a single scheduling mistake might not trigger the Gamser remedy, but a pattern of consistently bypassing the same carriers will.

The September 2023 Contract Talk column covered overtime equitability in detail. Under Article 8, Section 5.C.2, all overtime hours worked by and all opportunities offered to ODL employees are considered and counted when determining quarterly equitability, regardless of whether the overtime is on or off the employee's own route. Since the 2016 National Agreement, all hours count — not just specific categories.

If you're building an overtime equitability grievance, you need: the ODL list, clock rings or TACS Employee Everything Reports for all carriers, work schedules, and PS Forms 3996 showing who was offered overtime and who wasn't. The Fall 2014 NALC Activist published a detailed evidence checklist specifically for these grievances — it's one of the most practical resources available.

4. Snow on Article 29 and Cross-Craft Assignments — C-18159

National Arbitrator Carlton J. Snow, in C-18159, addressed a situation that comes up more than you'd think: what happens when a carrier loses their driving privileges? Management often tries to remove the carrier entirely. Snow said that's not how it works.

Snow ruled that Article 29 requires the Employer to make temporary cross-craft assignments in order to provide work for carriers whose occupational driver's license has been suspended or revoked. Management cannot simply remove a carrier because they can't drive. They must find other work — even outside the carrier craft.

Snow went further: "the Employer is without contractual authority to remove such employee. Such individuals shall be placed on leave with pay and reinstated to working status as soon as work is available."

This ruling connects to the broader principle under Article 13 that management must accommodate employees who can't perform their full duties. National Arbitrator Bernard Dobranski ruled in G94N-4G-C 96077397 that "other work" under ELM 546.141(a)(2) means work outside the employee's craft — and National Arbitrator Aaron, in H1C-5D-C 2128, held that any such assignment must minimize "adverse or disruptive impact" on the employee.

If a carrier at your station has their license suspended — whether for medical reasons, a state action, or an alleged safety violation — don't accept management's claim that the carrier has to go. Snow's ruling in C-18159 says otherwise.

5. The Just Cause Standard — Every Article 16 Case

This isn't one single case — it's the framework that governs every discipline grievance in the NALC. Article 16.1 establishes that management cannot discipline without just cause, and the JCAM defines the six sub-questions that determine whether just cause exists. The August 2023 Contract Talk column laid them out clearly:

1. Is there a rule? Was the employee aware of it?
2. Is the rule reasonable?
3. Is the rule consistently and equitably enforced?
4. Was a thorough investigation completed?
5. Was the severity of discipline reasonably related to the infraction?
6. Was the disciplinary action taken in a timely manner?

Article 16 is the most frequently cited contract article in the CREA database — it appears in over 13,000 arbitration cases. Article 16.7, which governs when employee records must be provided to the union, shows up in another 1,677 cases on its own. And the principle running through all of them is that discipline must be corrective in nature, rather than punitive.

The April 2025 Contract Talk column reinforced this in the context of management's new Headquarters Safety Engagement Teams: even discipline arising from safety observations must satisfy all six just cause sub-questions. Being observed doing something wrong isn't enough — management still has to follow the process.

A real example from the database: in C-31850, Arbitrator Donna Thomas overturned an indefinite suspension of a carrier who had been placed off duty due to criminal charges. The charges were eventually dismissed, but management kept the carrier suspended. Thomas found violations of Article 16.1 (just cause), Article 16.6, and Article 19, and sustained the grievance. The process matters as much as the facts.

How to Use This Knowledge

These five cases — and the principles behind them — represent the foundation of effective steward work. Here's how to apply them:

1. Know the case numbers. When you walk into a Step A meeting, citing "National Arbitrator Mittenthal, C-06238" carries more weight than saying "I think there's a case about that."
2. Know the MRS documents. M-00859 on overtime limits, M-00242 on comfort stops, M-00304 on walking pace, M-01664 on DOIS projections — these Step 4 settlements are binding interpretations of the contract.
3. Know the Contract Talk columns. The national Contract Administration Unit publishes detailed guidance every month in the Postal Record. The April 2023 (overtime limits), September 2023 (equitability), August 2023 (just cause), and July-December 2024 (route inspections) columns are essential reading.
4. Apply the framework. Don't just quote a decision — understand why the arbitrator ruled that way. What standard did they apply? What facts were decisive? That's what lets you connect the precedent to your case.

Management takes you seriously when you clearly know the precedent. And CREA's database of thousands of arbitration cases spanning 1970-2025 — including NALC-designated key decisions — makes finding that precedent faster than it's ever been.