What Is a Cardinal Infraction at UPS? Discharge Without a Warning Letter

If you've heard a steward or manager say "that's a cardinal infraction," they mean one of the most serious things in the UPS discipline world: an offense that can get you discharged on the first offense, without a warning letter first. Most discipline at UPS is supposed to be progressive — a warning, then maybe a suspension, then discharge. Cardinal infractions are the exception. This article explains what counts as a cardinal infraction, why they're treated differently, and — just as importantly — what protections still apply even when the company says you committed one.

The short answer

A cardinal infraction (also called a "cardinal offense" or "cardinal sin") is a serious violation that your contract lists as a dischargeable offense without the necessity of a warning letter being in effect ^[5][2]. In plain terms: for ordinary rule violations the company normally has to build a paper trail of progressive discipline first, but for a cardinal infraction it can move straight to discharge.

Generally speaking, workers and stewards describe a cardinal offense as one where you'll be walked out on the spot — no warning letter, no suspension, first offense is termination ^[10]. The idea is common across many industries: employers designate a short list of the most serious rule violations as automatic grounds for dismissal ^[9][11][12].

What your contract actually lists as cardinal infractions

Your supplement and rider spell out the specific offenses. Under the Western Region Supplement, Section 2, and the Southwest Package Rider, the following are dischargeable offenses without the necessity of a warning letter being in effect ^[2][5][8]:

1. Proven dishonesty
2. Drinking of alcoholic beverages while on duty
3. Recklessness resulting in a serious accident while on duty
4. The carrying of unauthorized passengers
5. Unprovoked assault on an employee or a supervisory employee while on duty
6. Selling, transporting, or use of illegal narcotics while in the employment of the Employer
7. Willful, wanton, or malicious damage to the Employer's property

These are the offenses the contract treats most seriously. For everything else, the normal rule applies: no employee shall suffer suspension or discharge without having been given a written warning notice setting out the facts ^[2].

Important: The exact list, and which supplement or rider governs, depends on your area. The offenses above come from the Western Region Supplement and the Southwest Rider ^[2][5]. If you work under a different supplement, check your own book — the concept is the same nationally, but the wording can vary. You can ask TeamstersGPT with your supplement selected to confirm.

"Proven dishonesty" — read the fine print

The most misused item on the list is "proven dishonesty," and the contract puts real limits on it. Your agreement expressly states that failure to accurately recall details during investigatory interviews, bona fide errors or mistakes, or simple methods errors do NOT constitute proven dishonesty ^[2][5][8]. It also says plainly that failure to follow methods, procedures, and/or instructions is not proven dishonesty ^[2][5].

That distinction matters. A missed methods step, an honest mistake, or forgetting a detail is not the same as theft or lying. The contract even provides a dispute path: any Local Union having continual disputes with the Company in a particular building about "proven dishonesty" must first try to resolve it with the labor manager, and if that fails it goes to the Co-Chairs of the Western Region of Teamsters/UPS Negotiating Committee for immediate resolution ^[2][6].

There's also specific language on signing for packages: the first offense of signing for a package where dishonesty is not proven will not result in discharge or suspension; a second such offense shall be cause for immediate discharge ^[6][8].

Cardinal infractions and staying on the job

Normally, under Article 7 of the National Master Agreement, an employee to be discharged or suspended stays on the job, without loss of pay, unless and until the discharge is sustained through the grievance procedure ^[1]. But Article 7 carves out an exception right at the top: this protection applies "except in cases involving cardinal infractions under the applicable Supplement, Rider or Addendum" ^[1].

That's why a cardinal infraction usually means you're walked out immediately rather than kept working while you grieve — which matches what members describe as being "walked out on the spot" ^[10]. It does not mean the discharge is final. It just means you may be off the clock while the grievance runs its course.

Just cause still applies — always

Here's the part the company won't remind you of: even for a cardinal infraction, any discharge, suspension, or warning notice shall be for just cause only ^[7]. The label "cardinal" does not let the company skip the burden of proof.

The company also has hard procedural deadlines. Under the Western Region Supplement, within ten (10) days of the occurrence of the alleged cause, the Employer must give written notice by certified mail to the employee and the Local Union, setting out the reason(s). All discharge and suspension letters must accurately set forth all relevant dates, Articles and violations relied upon ^[2][7]. If the Employer fails to give that written notice within the ten-day period, the right to discharge or suspend for that particular reason is waived ^[7].

You also keep your right to representation: the Employer recognizes the employee's right to requested representation by a steward, or designated alternate, at such time as the employee reasonably contemplates disciplinary action ^[6].

The 7 tests of just cause

When the company claims a cardinal infraction, stewards use the 7 tests of just cause to poke holes in the case. In discipline cases the Employer is required to give its complete case and all evidence against the member at the time of discipline ^[3]. The seven tests are ^[3][4]:

1. Notice — Did the employer give reasonable notice of the rule and the possible consequences?
2. Consistency — Has the rule been enforced consistently, or ignored for a long time?
3. Due process — Was there a pre-disciplinary interview? Timely action? A precise statement of charges? No double discipline?
4. Substantial proof — Is there substantial, credible evidence? Were all witnesses interviewed and documents reviewed?
5. Equal treatment — Is the penalty in line with what others got for the same offense?
6. Progressive discipline — Except for extreme misconduct or where the contract mandates a penalty, did the employer apply progressive, corrective discipline?
7. Mitigating and extenuating circumstances — Did the employer weigh your record and the full circumstances? ^[3][4]

Note test #6: cardinal infractions are exactly the "extreme misconduct" category where the company argues progressive discipline doesn't apply. That makes tests #4 (substantial proof) and #5 (equal treatment) even more important — the company still has to prove the serious offense actually happened.

What to do next

If the company hits you with a cardinal infraction:

• Ask for your steward immediately — you have the right to representation when you reasonably contemplate discipline ^[6].
• Don't argue or admit anything on the spot. Let the steward run the hearing and take notes.
• Make the company state its complete case and hand over evidence at the discipline hearing ^[3].
• Watch the deadlines — the company must give certified-mail notice within 10 days, and you/your Local must file the grievance and any panel filing within the contract's time limits ^[7].
• Grieve it. Cardinal infraction or not, the discharge must be for just cause only ^[7].

Because the exact list of cardinal infractions and the deadlines vary by supplement and rider, talk to your steward or Business Agent, and ask TeamstersGPT with your supplement selected to confirm the language that governs your building.