PC 148(a)(1) Resisting Arrest: Penalties, Defenses, and Expungement

California Penal Code section 148(a)(1), commonly called the resisting arrest statute, makes it a misdemeanor to willfully resist, delay, or obstruct a peace officer, public officer, or emergency medical technician who is performing official duties. A conviction carries up to one year in county jail, a fine up to $1,000, or both.¹ Officers tend to add this charge on top of whatever prompted the original encounter, so it usually appears as a secondary offense rather than the reason police showed up.

What the Prosecution Has to Prove

The standard jury instruction lists three elements, each of which must be proven beyond a reasonable doubt:²

The officer or EMT was lawfully performing or attempting to perform their duties.
You willfully resisted, delayed, or obstructed that person.
You knew, or reasonably should have known, the person was an officer or EMT performing those duties.

“Willfully” means you did the act on purpose. It does not mean you intended to break the law. Someone who deliberately pulls their arm away during handcuffing has acted willfully even if they didn’t think pulling away was illegal.²

The lawful duty element is where most contested cases are actually fought. If the officer was making an unlawful arrest, searching without a warrant or valid exception, or using excessive force, the officer was not lawfully performing duties, and the prosecution’s case fails at the first element.² The statute also says it does not protect an officer who is engaged in a criminal act during the encounter.¹

One more structural point worth knowing: 148(a)(1) applies only “when no other punishment is prescribed.”¹ It’s a catch-all. If your specific conduct already falls under a more targeted statute with its own penalty, that statute governs.

Conduct That Can Lead to a Charge

Physical resistance is the obvious example: struggling against handcuffs, pulling away during a detention, or blocking an officer’s path during a lawful investigation. But the statute doesn’t require any physical contact.

Verbal interference counts. Shouting over an officer to disrupt an interview, or refusing to leave a secured scene after being told to move, can support a charge. So can dragging your feet. Taking an unreasonably long time to step out of a car during a traffic stop, for example, can qualify. The statute reaches anything that creates a deliberate barrier to an officer’s work, whether that barrier is physical, verbal, or just slow-walking a lawful order.

Giving a False Name

Lying about who you are during a lawful stop is a separate offense under Penal Code 148.9, not 148(a)(1).³ Prosecutors sometimes charge both when a false name also delayed the investigation. Section 148.9 is also a misdemeanor.

What You Don’t Have to Do

Not every uncooperative moment is a crime. California has no general “stop and identify” statute, so if an officer approaches you on the street without reasonable suspicion, you aren’t required to show ID. The obligation to identify yourself kicks in only when you’ve been lawfully detained or arrested. Drivers are different: during a traffic stop you must present your license, registration, and proof of insurance.

Recording the Police

Filming or audio-recording an officer in a public place is not obstruction. Penal Code 148(g) says so expressly: the act of recording, by itself, does not violate the statute.¹ The protection has limits. You cannot physically interfere with the officer while recording. Stepping into an active scene, blocking movement, or crowding close enough to create a safety problem can cross into obstruction. The recording stays legal; the behavior around it is what gets charged. California is also a two-party consent state for audio, so record openly rather than with a hidden device.

Penalties and the True Cost of the Fine

A conviction is a misdemeanor punishable by up to one year in county jail, a fine up to $1,000, or both.¹ The $1,000 figure is only the base fine. California stacks penalty assessments and surcharges on top of every criminal fine, and the add-ons dwarf the base.

Courts add $27 for every $10 of the base fine, plus a 20% state surcharge, plus flat court operations and conviction assessment fees.⁴ On a $1,000 base fine, the penalty assessment alone reaches $2,700. Add the state surcharge, court operations fee, conviction assessment, and smaller administrative charges, and the total can approach four times the base. A maximum fine can leave you owing close to $4,000 or more before any restitution.

Probation Instead of Jail

Judges often sentence 148(a)(1) defendants to informal (summary) probation, especially on a first offense. Informal probation in California typically runs one to two years and involves no probation officer check-ins. You’re expected to pay fines and costs, complete any community service ordered, and obey all laws during the term.

A violation triggers a revocation hearing. If the judge finds by a preponderance of the evidence that you broke a condition, the court can reinstate probation with the same or modified terms, or revoke it and sentence you to as much as the original one-year maximum. Failing to appear at the hearing results in automatic revocation.

Defenses That Actually Work

The strongest defenses attack the three elements directly:

Unlawful arrest or detention. If the officer lacked probable cause for arrest or reasonable suspicion for a detention, the first element collapses. Same result if the officer did a warrantless search with no valid exception.
Excessive force. An officer using unreasonable force is not performing lawful duties. Courts have held that a person may use proportionate force to defend against an officer’s excessive force, though the defense disappears if you provoked the response or kept resisting after the force stopped.⁵
No willful act. Accidental or involuntary conduct isn’t willful. Stumbling into an officer during a chaotic scene, or a reflexive arm movement during handcuffing, doesn’t satisfy the element.
Lack of knowledge. If you had no reason to know the person was an officer, the third element fails. This comes up with plainclothes officers who don’t identify themselves.

Not knowing it was illegal to resist is not a defense. Willfulness asks only whether you did the act on purpose.²

Life After a Conviction

Jail and fines are only part of what a conviction does to you. A 148(a)(1) misdemeanor creates a permanent criminal record that surfaces on standard background checks and can affect employment, housing, and licensing.

Public service, banking, education, and healthcare employers tend to look hard at an obstruction conviction. Even where it doesn’t disqualify you outright, it can delay hiring or trigger extra screening.

Licensing boards have authority under Business and Professions Code section 480 to deny an application based on a conviction that is “substantially related” to the duties of the profession and occurred within the preceding seven years.⁶ Whether a 148(a)(1) conviction meets that test depends on the profession. A nursing applicant or someone seeking a law enforcement credential will face harder questions than someone applying for a general contractor’s license.

On immigration, a 148(a)(1) conviction is generally not treated as a crime involving moral turpitude and typically does not, by itself, trigger deportation or inadmissibility. Immigration law is fact-specific, though, so any non-citizen should consult an immigration attorney before entering a plea.

Expungement Under Penal Code 1203.4

You can petition to expunge a 148(a)(1) misdemeanor once you’ve completed probation or been discharged early. Under Penal Code 1203.4, the court withdraws your guilty plea (or sets aside the verdict) and dismisses the case.⁷ You must not currently be serving a sentence for another offense, on probation for another offense, or facing new charges.

Expungement releases you from most penalties and disabilities of the conviction, but it has limits. You still have to disclose the conviction when applying for public office or a state or local license. The expunged conviction can still be used against you in a later criminal prosecution. And expungement does not restore firearm rights lost through the conviction.⁷ For most private employers and licensing boards, though, an expungement meaningfully improves your position. A board cannot use the conviction as grounds for denial once it’s been expunged.

Why a Guilty Plea Can Kill a Civil Rights Lawsuit

If you believe an officer used excessive force during the encounter, pleading guilty to 148(a)(1) can shut the door on a federal civil rights suit under 42 U.S.C. § 1983. Under Heck v. Humphrey, you cannot maintain a § 1983 lawsuit if winning it would necessarily mean your underlying conviction was invalid.⁸

Because 148(a)(1) requires proof that the officer was lawfully performing duties, a Fourth Amendment claim built on unlawful arrest directly contradicts that finding. The Supreme Court used resisting arrest as its textbook example of the problem. To pursue the civil suit, you have to get the conviction reversed, expunged, or otherwise invalidated first.⁸ That’s why defense attorneys push back hard on quick plea offers when excessive force may have occurred. The plea locks the door on the civil case unless and until the conviction is overturned.

1
California Legislative Information. California Code PEN 148
2
Justia. CALCRIM No. 2656 Resisting Peace Officer, Public Officer, or EMT
3
California Legislative Information. California Code, Penal Code PEN 148.9
4
Solano County Superior Court. Fine Breakdown
5
Justia. Use of Force in Resisting Arrest
6
California Legislative Information. California Code, Business and Professions Code BPC 480
7
California Legislative Information. California Code, Penal Code PEN 1203.4
8
Justia U.S. Supreme Court. Heck v. Humphrey, 512 U.S. 477 (1994)