On Site & In Compliance

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Practical guidance on DOT compliance, occupational health, transportation safety, workplace testing, and regulatory updates from Occupational Safety On Site.

On Site & In Compliance is the official blog of Occupational Safety On Site, created to provide practical guidance on DOT compliance, occupational health, transportation safety, workplace testing, and regulatory updates.

Latest Articles

  • FMCSA Clearinghouse return-to-duty process with Not Prohibited status, follow-up testing, employer responsibilities, and a commercial truck.
    Hiring a Driver With a Clearinghouse Violation: What Are You Actually Taking On?
    A Clearinghouse violation does not automatically mean a driver can never be hired. But before moving forward, employers should understand the return-to-duty process, follow-up testing requirements, and the responsibilities they may be taking on.
  • Drug-testing panel checklist showing included substances and drugs that may require additional testing
    Does Your Drug-Testing Panel Actually Test for the Drug You’re Concerned About?
    A “5-panel” or “10-panel” drug test may not include every substance an employer assumes it does. Learn why non-DOT employers should verify their testing panel—and how additional testing for DOT-regulated employees must remain separate from the required DOT test.
  • Drug Testing Compliance is Moving Again: Is Your Program Keeping Up?
    Several major drug-testing updates are moving at once. Learn what ODAPC’s revised urine collection guidelines, the new Federal CCF, marijuana rescheduling, and possible changes affecting DOT oral fluid testing could mean for employers and their policies.
  • Why Employers Need to Vet Their Service Agents
    When employers use a collection site, MRO, SAP, C/TPA, or other DOT service agent, it can feel like the program is being handled for them. But under DOT rules, the employer still remains responsible for compliance. Here’s why employers should understand who they are trusting with their DOT drug and alcohol testing program — and what questions they should be asking.
  • Employer reviewing FMCSA Clearinghouse compliance responsibilities and driver records.
    Who Is Responsible for Clearinghouse Queries?
    Many employers assume their C/TPA handles all Clearinghouse responsibilities. Learn where employer responsibilities begin, what support a C/TPA can provide, and how communication plays a critical role in maintaining compliance.