The Office of Inspector General is tasked with ensuring efficiency, accountability, and integrity in the U.S. Postal Service. We also have the distinct mission of helping to maintain confidence in the mail and postal system, as well as to improve the Postal Service's bottom line. We use audits and investigations to help protect the integrity of the Postal Service. Our Semiannual Report to Congress presents a snapshot of the work we did to fulfill our mission for the six-month period ending March 31, 2018. Our dynamic report format provides readers with easy access to facts and information, as well as succinct summaries of the work by area. Links are provided to the full reports featured in this report, as well as to the appendices.


For over 200 years, the U.S. Postal Service has been delivering mail for American consumers and businesses. But as the worlds of commerce and communications keep changing — and as customer expectations continue to rise — delivery is more than just getting mail or a package from point A to point B.

Customers today expect real-time visibility, so accurate scanning of mail and packages is critical. They also demand a positive overall experience, whether that’s getting a delivery when expected or visiting a post office to make a transaction. They want services at the lowest possible cost, which means all aspects of mail processing, handling, and delivery need to be as efficient as possible.

Our audits and white papers featured in this Semiannual Report to Congress for the period ending March 31, 2018, focus on many of these important issues around delivery, efficiency, and satisfaction. For example, our audit report on nationwide package delivery scanning looked at two billion package scans during a six-month period to identify improper “stop the clock” deliveries — that is, scans that occurred somewhere other than at the door when the package was delivered.

Another report looked at how the Postal Service measures customer satisfaction on mail delivery and offered enhancements to the survey design, as well as sample techniques that could increase the accuracy of the surveys. Our research confirmed that the Postal Service’s Delivery Survey provides it with valuable customer feedback, but adjustments could make it even better.

All told for this period, we issued 61 audit reports, management advisories, and PARIS risk models, and the Postal Service accepted 79 percent of our recommendations.

As always, this semiannual report also includes our investigative work for the six-month period. Our investigations can be grouped around a handful of broad focus areas: health care fraud (claimant and provider); mail theft; contract fraud; financial fraud; and narcotics. Our special agents are active in all of these areas, but narcotics allegations are rapidly becoming the area of greatest focus. We see an increasing number of narcotics cases nationwide and a growing sophistication on the part of traffickers on how to avoid detection.

However, we also see opportunities for data to be a useful tool in uncovering not just fraud, waste, and misuse, but also illegal activity around narcotics in the mail. We have invested in building an analytical, evidence-based culture, which has proved so successful that we are now extremely reliant on data analytics for many of our most important audits and investigations.

In this period, we completed 1,141 investigations that led to 329 arrests and nearly $53 million in fines, restitutions, and recoveries, $23 million of which was turned over to the Postal Service.

I look forward to working with stakeholders as we address the challenges ahead. With the support of postal management and Congress, the OIG will continue to play a key role in maintaining the integrity and accountability of America’s Postal Service, its revenue and assets, and its employees.

Read full report

Read Spring 2018 SARC Fact Sheet

Comments (4)

  • anon

    In light of the above, relating to the Inspector General's audits and investigations, concerns have been raised from time to time regarding false information that has been submitted to law enforcement authorities that gives rise to searches of all sorts, at airports as well as through airmails. In times like these when even a toddler is wrongfully 'flagged' for special examination due to his/her name or identity being compromised, what mechanism is there in place to safeguard against such eventualities?

    Aug 13, 2018
  • anon

    It is true that a great percentage of employees got involved in a illegal activity we found people of trust abusing their power at all leves of management what if OIG engage even more in management illegal activity ranging from abuse of power delaying mail forcing people to apply for light duty when nothing wrong is there taken hard working employees out just because kicking employees out of the building and blame them on anything just because

    Jun 10, 2018
  • anon

    There needs to be an investigation as to the amount China pays for postage compared to what it costs U.S. Businesses. This seems to be unfair business practices. The American taxpayer is being cheated when thay have to support the deficits of the Post Office.

    Jun 02, 2018
  • anon

    Why is China receiving deep discounts on postage? The USPS doesn't give the comprable discounts to U.S. businesses.

    Jun 02, 2018