You don't need a local office. WorkOccMed manages your entire DOT random testing program online — draws, notifications, MRO review, and Clearinghouse reporting — with 15,000+ collection sites across the country.
A C/TPA (Consortium/Third-Party Administrator) is an organization authorized under 49 CFR Part 40 to manage DOT drug and alcohol testing programs on behalf of employers. The C/TPA handles the administrative requirements so drivers and carriers can stay compliant without managing the program themselves.
Your C/TPA is responsible for:
Maintains the pool of enrolled drivers and conducts scientifically valid random selection draws
Notifies you when selected and provides collection site instructions with required timeframes
Works with a Medical Review Officer to verify all test results before reporting
Reports all violations, refusals, and RTD completions to the FMCSA Drug & Alcohol Clearinghouse
Maintains required testing records for FMCSA audits and DOT inspections
Manages follow-up testing programs after a violation per SAP recommendations
The FMCSA sets minimum random testing rates each year. For 2026, all CDL drivers in safety-sensitive functions must be enrolled in a compliant random testing program at these rates:
This means if a consortium has 100 drivers, at least 50 drug tests and 10 alcohol tests must be conducted per year, with drivers selected randomly each draw period. Being in a consortium pools your risk with other drivers — the larger the pool, the lower your individual draw frequency.
If you drive a commercial motor vehicle under your own USDOT number and have no employees, you are both the employer and the employee. FMCSA regulations prohibit you from managing your own random testing program — you must join a consortium under 49 CFR Part 382.305.
Carriers with 1–5 drivers typically use a C/TPA because maintaining a statistically valid random pool with so few drivers is impractical on your own. A consortium pools you with thousands of drivers so the math works correctly.
Fleets with many drivers can self-administer, but many use a C/TPA to reduce administrative burden, ensure accurate random selection, and maintain proper MRO and Clearinghouse compliance.
Once you enroll, your name enters the random selection pool. Every driver in the consortium has an equal probability of selection in each draw period.
Using a random number generator, the C/TPA selects the required percentage of the pool each draw period (typically quarterly). Selections are completely random — past selections do not reduce your future probability.
If selected, you receive notification from WorkOccMed. You must report to a collection site the same day (for pre-shift) or before your next duty period begins. The notification specifies the collection type and deadline.
You visit any authorized collection site. For drug tests, a urine specimen is collected, sealed, and sent to a SAMHSA-certified lab. For alcohol tests, a breath alcohol test is administered on-site.
A Medical Review Officer reviews the lab result. Negative results are reported quickly. Non-negative results trigger donor interview procedures before any violation is reported.
All violations are reported to the FMCSA Clearinghouse within 3 business days. Negative results are not reported. Annual limited queries by prospective employers will show no record for compliant drivers.
A Consortium/Third-Party Administrator manages your DOT random drug and alcohol testing program — maintaining the pool, conducting draws, notifying selected drivers, coordinating with the MRO, and reporting to the FMCSA Clearinghouse.
No. WorkOccMed handles all administrative services electronically. Testing is done at 15,000+ collection sites near you — the C/TPA just manages the paperwork and compliance from anywhere in the country.
Owner-operators are required by 49 CFR Part 382.305. Small carriers with limited drivers typically must also join a consortium to maintain a statistically valid random pool.
50% for drug testing and 10% for alcohol testing of the driver pool per year. These are minimum rates — FMCSA can increase them if industry-wide positive rates rise above thresholds.
Refusing to test is treated the same as a positive result under 49 CFR Part 382. You must stop performing safety-sensitive functions immediately and begin the return-to-duty process with a SAP evaluation.
WorkOccMed's consortium enrollment starts $49 per driver per year. Individual drug tests ($80) and alcohol tests are billed separately when you're actually drawn.
Yes. You can transfer your enrollment to a new C/TPA at any time. Your new C/TPA will collect your testing history and enroll you in their pool. Contact us and we'll coordinate the transfer.