USPS watchdog finds unbadged drivers, language gaps and $1.9M in bad payments across its contract delivery fleet

The U.S. Postal Service's Office of Inspector General has published an audit of the agency's Contract Delivery Service (CDS) program, the network of independent contractors who deliver a large share of the mail USPS does not carry on its own trucks or with its own employee carriers. The report, Evaluation of Contract Delivery Services (Report No. 25-136-R26), was published August 18, 2026, and it lands on a program the OIG has flagged before without the underlying compliance problems going away.

CDS covers more than 8,273 active contracts and cost the Postal Service approximately $593 million in fiscal year 2025, according to the report. Auditors sampled a group of carriers and interviewed 69 of them directly to test badge compliance, background-check completeness, and driving-safety practices. What they found was a program with weak controls at almost every checkpoint.

Badges, background checks and a badge-sharing problem

Of the 69 carriers interviewed, only 35% possessed a valid security badge; 31 lacked one entirely. More than 60% had no electronic barcode on file, which the OIG links to incomplete background-check processing — the barcode is tied to the vetting record, and its absence means USPS cannot confirm the screening was done.

The audit also found badge-sharing at scale: auditors identified 3,800 instances where a single badge was used to clock into multiple routes on the same day, and roughly 1.5 million pieces of mail were scanned using credentials that did not match the carrier performing the delivery. A further 416,000 scans were logged using badges issued for a different facility or region than where the work was performed. None of this is described by the OIG as fraud in the criminal sense — the report frames it as a control failure — but it means the Postal Service's own tracking data cannot reliably say who delivered what, on which route, on a given day.

English-language proficiency and safety oversight

The audit separately flagged CDS carriers who could not communicate effectively in English with USPS staff and customers, tying the finding to the broader federal push on commercial-driver English-language enforcement — DOT and FMCSA data cited in the report show more than 26,000 commercial drivers have been placed out of service nationally for English-language-proficiency violations. The OIG also found no requirement for CDS carriers to report accidents, and documented unsafe driving practices among some contractors, with no standard escalation process feeding back to headquarters.

On the financial side, the OIG identified $1.9 million in incorrect extra-trip payments made to CDS suppliers across fiscal years 2024 and 2025, the result of miscalculated rates rather than any single vendor's overbilling.

The report attributes much of this to a structural problem: CDS oversight runs on largely manual processes at headquarters, which limits visibility into what is happening at the local level and weakens accountability when a station or district doesn't follow procedure.

The OIG issued 10 recommendations — four aimed directly at the safety and security gaps (badging, background-check completion, accident reporting, English-proficiency screening) and six aimed at tightening CDS program oversight more broadly. USPS management agreed with all 10, though the OIG rated the agency's response to two of them, numbers 4 and 5, as only "partially responsive," meaning the corrective action proposed doesn't fully close the gap identified.

This is not the first time OIG auditors have found the CDS pipeline under-vetted. A February 2024 report, Contract Trucking Safety and Compliance (Report No. 23-088-R24), found that 93% of contracting officers interviewed did not know when their contractors were using subcontractors, and that 241,006 trips filled through the Postal Service's freight-auction process were completed by drivers who had not been vetted. Two audits, nearly two and a half years apart, describe the same underlying condition: USPS knows who it contracted with on paper, and has much weaker visibility into who is actually behind the wheel.

What this means for ground carriers and CDS bidders

For carriers and owner-operators who run CDS routes, or are weighing whether to bid on one, three things are worth tracking. First, badge and background-check enforcement is likely to tighten in the next contract cycle — USPS agreed to all 10 recommendations, and closing the badging gap will mean more paperwork and verification steps before a driver can start a route, which raises onboarding time and cost for the small carriers who dominate this segment. Second, the English-language-proficiency finding puts CDS in the same enforcement lane as the rest of the industry's DOT/FMCSA crackdown; carriers with drivers who would fail an English-proficiency check are exposed regardless of which side of the CDS/for-hire line they operate on. Third, the $1.9 million in miscalculated extra-trip payments cuts both ways — some carriers have been overpaid and some almost certainly underpaid, and a rate recalculation prompted by this audit could change route economics for CDS operators before the next bid cycle.