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Hazmat Postal Shipper

Course Code: HMT 381

This course expands on the hazmat shipper's 49 CFR regulatory knowledge and covers the unique United States Postal Service (USPS) Publication 52 requirements for shipping hazmat by US Mail. 

Shippers who complete this online course build the in-depth expertise to identify which materials are mailable; which are prohibited; and how to ensure safe, on-time delivery of hazmat by mail.

Registration includes: 

  • Engaging, interactive hazmat training.
  • Relevant excerpts of the 49 CFR Hazardous Materials Regulations (HMR). 
  • Trusted compliance resources and references to simplify hazmat compliance.
  • Three months of Lion Membership for complete compliance support.
  • Certificate to demonstrate competence in USPS hazmat regulations.

Hazmat Postal Shipper Training Covers:

  • Categories of hazardous or “harmful” materials
  • What types and amounts of hazardous materials will USPS carry/deliver?
  • How to determine if USPS can accept your hazmat package
  • How to package, mark, label, and document hazmat by mail
  • Special exceptions for very small quantities
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Key Learning Objectives: 

  • Determine mailability of hazardous materials based on USPS restrictions
  • Properly follow USPS requirements (Publication 52) for hazmat shipped by mail
  • Describe how US DOT and USPS requirements relate to each other 

Online Course Details

Course code
Compatible on
HMT 381 Desktop or tablet
HMT 381 60 minutes
Access time
HMT 381 90 days
HMT 381 Yes
Course code HMT 381
Compatible on Desktop, tablet, or mobile
Duration 60 minutes
Access time 90 days  
Certificate? Yes


CEUs and Certification Maintenance

CEUs awarded
Lion Membership (incl. Finder Service)  
0.10 3 months
CEUs awarded 0.10
Lion Membership 3 months

See how Lion courses can help you maintain your professional credentials.

Why choose online hazmat training?

Produced and kept up-to-date by Lion's team of experienced hazmat trainers and regulatory experts, this course is comprehensive, reliable, and designed to simplify hazmat compliance for employees at any experience level. 

Online courses are available 24/7 with support available 7 days a week. Our state-of-the-art learning management system gives you access to tools that will enhance your online training experience:

  • Resume your training from where you left off with automatic bookmarking
  • Track your progress with the detailed course status display
  • Get answers to your course content questions from expert instructors
  • Develop your compliance expertise with engaging interactions
  • Test your knowledge with exercises and quizzes on critical topics
  • Access your complete Lion training history at any time

Who should hazmat postal shipper training?

Small businesses, e-commerce shippers, and any organization that ships or returns regulated hazardous materials—flammables, lithium batteries, toxic substances, medical samples, dry ice, or any other regulated material—using the United States Postal Service (USPS) as a carrier.
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