DUI / OWI Defense
Science-based OWI defense challenging the evidence, protecting your license, and fighting for outcomes that preserve your career and your freedom.
DUI / OWI Defense
An OWI charge in Michigan is not a minor traffic matter—it is a criminal prosecution with mandatory minimums, license consequences, and lasting collateral damage that can end careers before the case is ever resolved.
Michigan's Operating While Intoxicated (OWI) law is among the most aggressively prosecuted in the Midwest. Prosecutors rely on breath and blood test results as if they were infallible—they are not. Every instrument has a margin of error. Every traffic stop has a constitutional threshold. Every field sobriety test has standardized protocols that officers routinely fail to follow. A science-based OWI defense examines the evidence the way prosecutors hope you won't.
Michigan OWI charges range from first-offense misdemeanors to felony OWI with serious injury or death. Even a first-offense OWI carries license suspension, fines, points, possible jail, mandatory alcohol treatment, and—critically—a permanent criminal record that affects professional licensing, security clearances, firearms rights, and employment. Repeat offenses escalate to felony territory with mandatory incarceration and lifetime collateral consequences.
Our OWI defense practice covers every charge tier: standard OWI (BAC .08+), High BAC (.17+), OWI with a minor in the vehicle, OWI causing serious injury, felony OWI (3rd offense), and OWPD (Operating with the Presence of Drugs). We challenge the stop, the field investigation, the chemical test, and the prosecution's narrative from first appearance through trial.
Technical Defense Strategy
Breathalyzers malfunction. Blood samples degrade. Officers deviate from protocol. Every one of these failures is a defense—if you know where to look.
Michigan OWI prosecutions rest on chemical test results that juries treat as scientific certainty. They are not. The DataMaster DMT breath testing instrument used by Michigan law enforcement requires precise calibration, operator certification, and strict procedural compliance. The 15-minute observation period before testing, the instrument's maintenance log, the officer's certification records, and the test printout itself all contain exploitable weaknesses that experienced OWI defense attorneys know to demand and analyze.
Breath test challenges: We review DataMaster calibration records and maintenance logs, operator certification and training records, the 15-minute observation compliance, interfering substances (mouth alcohol, GERD, diabetes-related acetone), and the instrument's margin of error against the charged BAC. A result of .09 on an instrument with a recognized variance of ±.005 is a legitimate challenge at any BAC level near the threshold.
Blood test challenges: Blood draws introduce an entirely separate chain of custody, preservation, and analysis chain. We examine the phlebotomist's certification, the blood kit's expiration and handling, the laboratory's accreditation, the analyst's methodology, and whether the sample was properly preserved to prevent fermentation. An improperly preserved blood sample can show a falsely elevated BAC—a fact prosecutors rarely volunteer.
Field sobriety test challenges: The Horizontal Gaze Nystagmus, Walk-and-Turn, and One-Leg-Stand tests are only valid when administered under NHTSA-standardized conditions by a trained officer. Uneven surfaces, improper instructions, lighting conditions, footwear, age, weight, and pre-existing medical conditions all affect performance—and officer deviation from the validated protocol renders the entire test inadmissible as evidence of intoxication.
Professional Impact Mitigation
For professionals, the criminal conviction is often not the most destructive consequence of an OWI—the license revocation, employment termination, and security clearance loss can be far worse.
Michigan OWI law creates a web of mandatory administrative and professional consequences that operate independently of the criminal sentence. A plea of guilty to OWI—even one that avoids jail time—can simultaneously trigger CDL disqualification, professional license suspension, mandatory employer reporting, and firearms rights restrictions under federal law. Understanding these collateral consequences before entering any plea is essential.
CDL and commercial driver consequences: A CDL holder convicted of OWI—even in a personal vehicle—faces a mandatory 1-year federal disqualification for a first offense and lifetime disqualification for a second offense. There is no restricted license, no limited driving privileges, and no administrative appeal. The only defense is preventing the conviction. We handle CDL OWI cases with this fact as the baseline: a plea deal that saves the license is worth fighting for; a conviction that ends a career is not acceptable without exhausting every challenge.
Healthcare and licensed professionals: Nurses, physicians, pharmacists, and other licensed healthcare professionals face mandatory self-reporting obligations and LARA investigation on any OWI conviction. We coordinate OWI defense with professional licensing strategy from the first consultation—pursuing outcomes that satisfy licensing board requirements without creating a permanent disqualifying record.
Security clearances and federal employment: OWI convictions must be disclosed on federal security clearance applications (SF-86) and can result in clearance denial or revocation under alcohol-related adjudicative guidelines. For federal employees, contractors, and military personnel, we assess the clearance implications of every disposition option alongside the criminal defense strategy, and pursue the outcome most likely to preserve both the clearance and the career.
How an OWI Defense Unfolds
From the traffic stop to final resolution—what to expect at every stage
The OWI Defense Process
Arrest & Chemical Testing
Following a traffic stop, the officer conducts field sobriety tests and requests a breath or blood sample. You have the right to refuse a portable breath test (PBT) roadside—but post-arrest DataMaster or blood draw refusal triggers an automatic 1-year license suspension under Michigan's implied consent law.
Arraignment
Arraignment is your first court appearance—typically within 24–48 hours of arrest. The charges are formally read, bail is set or continued, and you enter your initial plea. Always plead not guilty at arraignment. You cannot undo a guilty plea; you can always change it later after reviewing all evidence.
Evidence Collection & Review
We demand complete discovery: the police report, dashcam and bodycam footage, the DataMaster maintenance and calibration logs, the officer's certification records, the blood sample chain of custody (if applicable), and all dispatch and communications records. Most OWI cases turn on evidence prosecutors assume defendants won't scrutinize.
Pre-Trial Motions
This is where scientific and constitutional defenses become formal legal challenges. We file motions to suppress unlawfully obtained evidence, challenge the admissibility of field sobriety test results, contest the reliability of chemical test results, and where appropriate, move to dismiss charges that cannot survive scrutiny.
Negotiation or Trial
With a complete picture of the prosecution's evidence and its weaknesses, we evaluate plea offers honestly: does the offer eliminate the license consequences? Does it protect your professional license? Does it avoid mandatory minimums? If the offer is unacceptable and the evidence is vulnerable, we try the case.
Sentencing & License Restoration
If a conviction results, we advocate for the minimum sentence, pursue restricted license options (sobriety court, ignition interlock programs), and address professional licensing implications at sentencing. For repeat offenses, we begin planning for DAAD license restoration hearings as soon as the mandatory revocation period allows.
Don't Navigate This Alone
Every stage of an OWI case contains decisions that affect the outcome. The sooner you have counsel, the more options remain available—including the ones that protect your license, your career, and your record.
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