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720 ILCS 5/31-1 – Resisting or Obstructing a Peace Officer, Firefighter, or Correctional Institution Employee

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Posted by Christopher Combs on April 21, 2026

720 ILCS 5/31-1 – Resisting or Obstructing a Peace Officer, Firefighter, or Correctional Institution Employee

This law says it’s a crime to knowingly resist or block a police officer, firefighter, or jail worker when they’re doing their job.

This Illinois law makes it illegal to fight against, block, or interfere with a police officer, firefighter, or prison or jail worker who is carrying out official duties. Breaking this law can lead to jail time, community service, or even a felony charge if someone gets hurt.

(a) A person breaks the law if they knowingly:

  1. Try to stop or fight against being arrested, or
  2. Get in the way of or stop a police officer, firefighter, or jail employee from doing something they are allowed to do as part of their job.

Sentence: This crime is a Class A misdemeanor.

(a-5) Sentence: Besides any other punishment, the judge must order someone found guilty of this crime to spend at least 48 hours in jail without a break, or to do at least 100 hours of community service. The person can’t get probation to shorten this time.

(a-7) Sentence: If what the person did caused an injury to a police officer, firefighter, or jail employee, the crime becomes a Class 4 felony.

(b) The law defines a “correctional institution employee” as someone who supervises or controls inmates or people in custody at a prison, jail, detention center, or similar place. “Firefighter” means anyone, paid or volunteer, who works in a fire department and fights fires or helps with fire-related duties, including people who investigate arson for the State Fire Marshal.

(c) A person is not guilty under this law if they resist or get in the way of a firefighter only because they went back inside a building to rescue or try to rescue someone.

(d) A person can’t be arrested for resisting arrest unless there is another crime that caused the police to arrest them in the first place.

View the full statute here.

Contact us online or call (314) 900-HELP to talk with a Southern Illinois criminal defense lawyer.

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