What Counts as Just Cause for Discipline at UPS?

If you drive or sort for UPS, "just cause" is one of the most important protections you have. It means the company can't discipline or fire you for just any reason — they have to have a fair and provable reason, and they have to follow the contract's procedures to get there. This article walks through what just cause actually means, the framework most stewards use to test it, and the specific contract rules that back you up.

"Just Cause Only" Is the Standard

The core idea behind just cause is simple: discipline has to be reasonable, supported by real evidence, and applied consistently. Generally speaking, this is the central protection in almost every union contract — the phrase is sometimes written as "proper cause" or "fair cause," and it binds the employer to discipline for a just reason, not just any reason ^[15].

Your contract makes this an explicit requirement. Under the Western Region Supplement, "Any such discharge, suspension, or warning notice shall be for just cause only" ^[2]. That single sentence is what lets the Union challenge discipline that doesn't measure up.

The 7 Tests of Just Cause

When the company disciplines a member, your steward is trained to run the case through the 7 tests of just cause. These tests come straight from the Teamsters United steward toolkit your Local uses at disciplinary hearings ^[1]:

1. Notice — Did the employer give reasonable notice of the rule or standard, and of the possible disciplinary consequences for breaking it? ^[1] Generally, that warning can come from a direct statement, training, or written/verbal company rules ^[14].
2. Consistency — An employee can't be penalized for breaking a rule the employer has let slide for a long time ^[1]. Selective enforcement undermines just cause ^[15].
3. Due Process — Was there a pre-disciplinary interview? Did the employer act in a timely way, give a precise statement of charges, follow contract procedures, and avoid double discipline? ^[1]
4. Substantial Proof — Is there substantial, credible evidence of wrongdoing? Were all witnesses interviewed and all documents reviewed? Your steward should ask for copies of all evidence ^[1].
5. Equal Treatment — Absent a valid distinction, the employer can't hit you with a much harsher penalty than others got for the same offense ^[1]. Minor rule violations generally aren't just cause unless people are consistently fired for them — that's the equal-treatment principle ^[17].
6. Progressive Discipline — Except for extreme misconduct (or where the contract mandates a specific penalty), did the employer use progressive, corrective discipline rather than jumping straight to the harshest step? ^[1]
7. Mitigating and Extenuating Circumstances — Penalties must fit the seriousness of the offense, with weight given to your past record and any circumstances that explain or soften what happened ^[1].

These tests aren't unique to UPS — they're a widely recognized framework that arbitrators and employers across many workplaces use to judge whether discipline is fair ^[13][16]. But your steward applies them specifically at your hearing, and writes down the answers, to build the Union's case ^[1].

What the Employer Has to Prove — and How They Have to Do It

In a discipline case, the burden is on the company. The steward's job at the Initial Disciplinary Hearing is to make the Employer lay out its complete case and all evidence at the time of discipline, then ask questions to see whether it satisfies the 7 tests ^[1].

Your contract also imposes hard procedural rules:

• Written warning notice first. No employee can be suspended or discharged without first getting a written warning notice that clearly sets out the facts — and those facts must be the same type as the ones the suspension or discharge is based on ^[7].
• Accurate letters. All warning, suspension, and discharge letters must accurately set forth all relevant dates, Articles, and violations relied upon by the company ^[2][7].
• Ten-day notice deadline. Within ten (10) days of the alleged cause, the Employer must give written notice by certified mail to the employee and the Local Union, stating the reason(s). If the company misses that 10-day window, the right to discharge or suspend for that reason is waived ^[2].
• You usually stay on the job. Except for cardinal infractions under the applicable Supplement, an employee to be discharged or suspended is allowed to stay on the job, without loss of pay, unless and until the discipline is sustained through the grievance procedure ^[10].

Cardinal Infractions — When a Warning Notice Isn't Required

Some offenses are so serious the contract treats them as dischargeable without a warning letter being in effect. Under the Western Region Supplement, these include: proven dishonesty; drinking alcohol while on duty; recklessness resulting in a serious accident on duty; carrying unauthorized passengers; unprovoked assault on an employee or supervisor on duty; selling, transporting or using illegal narcotics while employed; and willful, wanton or malicious damage to the Employer's property ^[7].

Even here, "just cause" still applies — the company still has to prove the offense. And the contract narrows what counts. The Supplement spells out that failure to follow methods, procedures, and/or instructions is not proven dishonesty, and that failure to accurately recall details during investigatory interviews, bona fide errors or mistakes, or simple methods errors do not constitute proven dishonesty ^[7].

Technology Can't Be the Whole Case

A big protection in the 2023–2028 National Master is on discipline driven by tracking technology. No employee shall be disciplined based solely on information from GPS, telematics, or any similar system unless they engage in dishonesty — defined as an intentional act or omission intended to defraud the company ^[3]. A driver's failure to accurately recall what the technology shows is not, by itself, dishonesty ^[8].

For violations warranting discharge, the company must confirm by direct observation or other corroborating evidence ^[8]. And you can't get a warning notice based solely on these systems without first having a verbal counseling session on an identical infraction ^[8]. The contract also bars inward-facing cameras and in-cab audio/video recording from being used for discipline ^[8].

Special Rules: Loss/Damage, Drugs and Alcohol, Probation

A few discipline situations have their own contract rules:

• Loss or damage (Article 10). You can't be hit with both discipline and reimbursement for the same loss — the company must tell you and the Union which one it's pursuing ^[6]. No action is taken until the grievance procedure is invoked and concluded, and in those hearings the Employer presents its case first ^[6].
• Drugs and alcohol (Article 35). A positive drug test is a dischargeable offense unless the Union and Employer agree to a lesser penalty, and refusing a reasonable-cause drug test is also dischargeable ^[4]. For alcohol, reasonable-cause testing requires the conduct to be witnessed by at least two supervisors (if available), and the levels trigger graduated consequences (for example, a 0.02–0.039 result means 24 hours out of service and a warning letter) ^[12][5]. A union representative should be made available when a supervisor confronts an employee ^[12].
• Probationary employees. Before attaining seniority, a probationary employee may be discharged without that discharge being subject to the grievance procedure — but the company can't use that to evade the contract or discriminate against Union members ^[9][11].

What to Do Next

If you've been disciplined or think you're about to be, request union representation and contact your steward right away — you have the right to have a steward (or, if none is present, another hourly employee) with you when management confronts you ^[12]. Make sure any warning, suspension, or discharge letter you receive actually lists the dates, Articles, and violations the company is relying on, and note the dates so the Union can check the 10-day deadlines ^[2][7]. Then have your steward run the case through the 7 tests of just cause ^[1]. Deadlines to file a grievance are short — generally ten days ^[2] — so don't sit on it. You can also ask TeamstersGPT with your specific supplement or rider selected to confirm the exact rules that apply in your area.