DER Training:Designated Employer Representative
Employers covered by DOT drug and alcohol testing rules must designate a DER under 49 CFR §40.3.
100% onlineEnglish & EspañolInstant signed certificate
Course Overview
Run a reliable DOT drug and alcohol testing program with clear decision trees, documentation templates, and vendor management guidance.
Decision trees for every test
Random, pre-employment, post-accident, reasonable suspicion, and follow-up events.
Vendor coordination
How to work with collectors, labs, C/TPAs, MROs, and SAPs without missteps.
Bilingual delivery
English and Spanish narration and captions for bilingual teams.
49 CFR Part 40
DOT drug & alcohol testing procedures
DOT requires the DER role—not a named DER certification.
Employers subject to DOT testing rules designate an employee with authority to remove workers from safety-sensitive duties and make testing decisions. Part 40 does not set a fixed DER curriculum, exam, or hour requirement; training prepares the DER to carry out those duties consistently.
Regulatory Basis
Every module maps to the exact regulation this course trains for. Each citation links to the official regulatory text.
- 49 CFR 40.3
Defines the Designated Employer Representative (DER) as an employee authorized to remove employees from safety-sensitive duties and make testing/evaluation decisions. Service agents cannot act as DERs.
- 49 CFR Part 40
DOT "Procedures for Transportation Workplace Drug and Alcohol Testing Programs," which defines the DER responsibilities this course is built around.
- DOT Part 40 §40.3 questions and answers
Confirms that an owner or actual employee may serve as DER, while a C/TPA, outside consultant, or other service agent may not.
- 49 CFR Part 382
The FMCSA controlled-substances and alcohol program that motor-carrier DERs administer alongside Part 40.
Who This Course Is For
Ideal for anyone responsible for administering a DOT drug and alcohol program:
Learning Objectives
Map DER responsibilities across 49 CFR Part 40 and Part 382 and avoid common audit findings.
Order, document, and track every test type: pre-employment, post-accident, etc.
Handle positives, refusals, shy bladder, and other complex scenarios.
Coordinate SAP referrals, RTD authorization, and record retention with defensible documentation.
Course Preview
Video: Designated Employer Representative duties under 49 CFR Part 40
The preview introduces the DER’s authority, DOT testing decisions, coordination with collectors and MROs, and the records an employer needs to retrieve during an audit.
How ready is your current DER program?
Take the free seven-question DER Readiness Check. It reviews authority, backup coverage, testing workflows, return-to-duty steps, and records—then generates a printable action plan with official source links.
Check DER readinessWhat’s Covered
Course modules across practical, role-specific compliance workflows.
Part 1 — Foundation
Part 2 — Role-Specific Operations
Get Your Team Started
Four steps to compliance. Most teams are up and running in under 10 minutes.
Purchase seats
Choose the number of seats your team needs. Volume discounts available.
Assign to your team
Add employees from your dashboard — takes about 2 minutes.
Complete training
Self-paced modules with quizzes. Learners pause and resume on any device.
Download certificates
Automatic recordkeeping with audit-ready certificates and training logs.
“I've been in the industry for over 20 years. This is honestly the best training that I've seen.”
Frequently Asked Questions
What is a Designated Employer Representative (DER)?
Under 49 CFR 40.3, a DER is an employee authorized by the employer to take immediate action to remove employees from safety-sensitive duties and to make required decisions in the testing and evaluation process. Employers subject to DOT drug and alcohol testing rules designate a DER; service agents cannot serve as the DER.
Which regulations define the DER role, and who enforces them?
The DER role and duties come from 49 CFR Part 40 (DOT's testing-procedures rule) and, for motor carriers, 49 CFR Part 382 (FMCSA). DOT/ODAPC and the applicable DOT agency enforce those rules. DOT does not prescribe a specific DER course, exam, or number of training hours.
Is DER training required by DOT?
DOT requires covered employers to designate a DER and makes the employer responsible for Part 40 compliance, but it does not prescribe a specific DER course, exam, or number of training hours. Employers still need a DER who can correctly carry out the testing, removal, communication, and recordkeeping decisions assigned by Part 40; this course trains those responsibilities.
Can a C/TPA or outside consultant serve as the DER?
No. DOT’s §40.3 guidance states that only the employer or an actual employee of the employer may perform the DER function; service agents, including C/TPAs and outside safety consultants, cannot act as DERs. They may support the program, but the employer must retain an internal DER with decision authority.
How is a DER different from a reasonable-suspicion supervisor?
They are distinct roles. The reasonable-suspicion supervisor training is the 60/60 requirement of 49 CFR 382.603; the DER administers the drug-and-alcohol program and makes removal/testing decisions under 49 CFR Part 40. One person may hold both roles, but the trainings serve different functions.
How often must a DER be retrained?
Part 40 sets no fixed recurrence for DER training; employers keep the DER current with program and regulatory changes. There is no federal expiration on the certificate.
Is online DER training accepted, and how long does it take?
Yes — fully online, self-paced, about 2–3 hours, English and Spanish, with an instant completion certificate.
Who should take DER training?
The named DER and back-ups, plus HR/compliance and safety leaders who administer a DOT drug-and-alcohol program; C/TPA account managers who support employers also benefit.
DER training resources
Use these practical guides to confirm who should serve as your DER, what the role requires, and how to evaluate a training program.
Which course do I need?
Three related DOT drug-and-alcohol courses. Compare who each one is for before you enroll.
- Best for
- For supervisors who decide when a CDL driver must be tested
- Renewal
- Once; no federal recurrence
- Duration
- 2 hrs (60 + 60)
- Best for
- For frontline leads and staff who need awareness, not authority
- Renewal
- None federally required
- Duration
- 60–75 min
- Best for
- For the named DER and HR or compliance staff who support them
- Renewal
- None federally fixed
- Duration
- 2–3 hrs
Availability and pricing are shown on each course page and confirmed at checkout. Renewal intervals reflect the cited federal regulations.
Prepare your DER for the next DOT audit
Equip your DER and backups with the scripts, forms, and timelines they need to respond to any testing event without delays or costly mistakes.