DWI Prior Offender: Second Offense

In Missouri, a “Prior Offender” isn’t just someone with a previous ticket; it is a specific legal status that drastically changes how the court handles a case. If someone has one prior intoxication-related conviction within five years of the current offense, the stakes increase significantly.

The Legal Shift

Once someone is classified as a Prior Offender, the offense is elevated from a Class B to a Class A Misdemeanor.

  • Max Penalty: Up to 1 year in jail and a fine of up to $2,000.
  • Probation Restrictions: One is no longer eligible for a Suspended Imposition of Sentence (SIS). Probation can only be a Suspended Execution of Sentence (SES), meaning the conviction goes on the permanent record.
  • One can also be required to install an Ignition Interlock Device (IID) – click here for info and costs.
  • One can also be required to wear a SCRAM bracelet for “continuous alcohol monitoring” – click here for info and costs.

Mandatory Minimums: Jail or Service?

State law mandates that a Prior Offender cannot be granted probation or parole until they have served a minimum amount of time or completed a rigorous alternative:

  1. 10 Days in Jail: This is the baseline requirement.
  2. The Community Service Alternative: In jurisdictions with a recognized program, you may perform 30 days* of community service instead of jail time.
  3. DWI Court: Successful completion of a certified DWI Court program can also satisfy this requirement.

Doing the Math: What is a community service “Day”?

There is often confusion about how many hours are required for community service. While some Missouri statutes for other offenses (like Driving While Revoked) define a “day” as 4 hours, the DWI standards are much stricter.

  • DWI Requirement: Historically and in practice, a “day” for DWI community service is calculated as 8 hours.
  • Total Hours: This means a Prior Offender must complete at least 240 hours of service to avoid the 10-day jail stint.
    • This is equivalent time (10 days in jail x 24 hours = 240 hours = 240 hours of community service).

Finally, as noted here and here, in Missouri the charges and punishments escalate with each DWI. The third DWI is a felony; so, this second DWI puts that person 66% towards the potential adverse consequences besides prison:

  • Losing your right to vote while confined under a sentence of imprisonment (note you generally cannot register or vote while on felony probation (SES) or parole).
  • Losing your gun rights: It is a Class C felony for any person convicted of a felony to knowingly possess a firearm – even non-violent felonies.
  • Preventing you from holding public office: A felony conviction generally disqualifies you from holding any public office in the state.
  • Disqualifying you from jury service: Anyone convicted of a felony is forever disqualified from serving as a juror in Missouri.
  • Impacting employment:
    • Professional Licenses: Licensing boards (for nursing, teaching, real estate, etc.) can deny, suspend, or revoke licenses based on a criminal history
    • Restricted Professions: Certain roles—such as law enforcement officer—are generally off-limits for those with a felony conviction.

Statutes Cited: RSMo 577.010; RSMo 577.023; RSMo 558.011; RSMo 558.002


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