---
type: "Bill"
title: "Crimes: assaultive; penalties for certain kinds of assault; modify. Amends secs. 81 & 81a of 1931 PA 328 (MCL 750.81 & 750.81a). TIE BAR WITH: HB 4521'23"
description: "Crimes: assaultive; penalties for certain kinds of assault; modify. Amends secs. 81 & 81a of 1931 PA 328 (MCL 750.81 & 750.81a). TIE BAR WITH: HB 4521'23"
jurisdiction: "us/states/mi"
legislature: "Michigan Legislature"
session: "2023-2024"
identifier: "HB 4520"
citation: "Michigan HB 4520 (2023-2024)"
classification: ["bill"]
subjects: ["Crimes: assaultive", "Crimes: penalties"]
status: "enacted"
primary_sponsors: ["Mike Mueller"]
version_count: 10
action_count: 29
vote_count: 3
first_action: "2023-05-04"
last_action: "2023-12-31"
source: "openstates"
source_identifier: "ocd-bill/0e8a4d0f-08bf-4acf-b9b4-0471e34f47a7"
source_url: "https://legislature.mi.gov/Bills/Bill?ObjectName=2023-HB-4520"
source_hash: "4348c5d9f914c8d079bdd124934c60b4ef5c7960162feb5e9345f14f784adb4c"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-mi"]
---

# Michigan HB 4520 (2023-2024) — Crimes: assaultive; penalties for certain kinds of assault; modify. Amends secs. 81 & 81a of 1931 PA 328 (MCL 750.81 & 750.81a). TIE BAR WITH: HB 4521'23

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **As Passed by the House** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billengrossed/House/pdf/2023-HEBH-4520.pdf)
2. **As Passed by the Senate** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billengrossed/House/pdf/2023-HEBS-4520.pdf)
3. **House Concurred Bill** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billconcurred/House/pdf/2023-HCB-4520.pdf)
4. **House Introduced Bill** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billintroduced/House/pdf/2023-HIB-4520.pdf)
5. **Public Act** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/publicact/pdf/2023-PA-0271.pdf)
6. **Substitute (S-1)** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-HCVBS-4520-00B715.pdf)
7. **Substitute (S-1) - 2** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-HCVBS-4520-0B7316.pdf)
8. **Substitute (S-1) - 3** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-HCVBS-4520-00C718.pdf)
9. **Substitute (S-1) - 4** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-HCVBS-4520-00D419.pdf)
10. **Substitute (S-1) - 5** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-HCVBS-4520-0Q2326.pdf)

## Votes

- passed; given immediate effect Roll Call # 229 Yeas 97 Nays 11 Excused 0 Not Voting 2 — **97–11** (pass) · lower
- PASSED ROLL CALL # 596 YEAS 22 NAYS 16 EXCUSED 0 NOT VOTING 0 — **22–16** (pass) · upper
- roll call Roll Call # 469 Yeas 97 Nays 12 Excused 0 Not Voting 1 — **97–12** (pass) · lower

## Sponsors

- Mike Mueller — primary (person)
- Kelly Breen — cosponsor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2023-05-04** introduced by Representative Mike Mueller `introduction`
- **2023-05-04** read a first time `reading-1`
- **2023-05-04** referred to Committee on Criminal Justice `referral-committee`
- **2023-05-09** bill electronically reproduced 05/04/2023
- **2023-06-20** reported with recommendation without amendment `committee-passage`
- **2023-06-20** referred to second reading
- **2023-06-22** read a second time `reading-2`
- **2023-06-22** placed on third reading
- **2023-06-27** read a third time `reading-3`
- **2023-06-27** passed; given immediate effect Roll Call # 229 Yeas 97 Nays 11 Excused 0 Not Voting 2 `passage`
- **2023-06-27** transmitted
- **2023-06-28** REFERRED TO COMMITTEE ON CIVIL RIGHTS, JUDICIARY, AND PUBLIC SAFETY `referral-committee`
- **2023-10-24** REPORTED FAVORABLY WITH SUBSTITUTE (S-1) `committee-passage`
- **2023-10-24** REFERRED TO COMMITTEE OF THE WHOLE WITH SUBSTITUTE (S-1) `referral-committee`
- **2023-10-24** REPORTED BY COMMITTEE OF THE WHOLE FAVORABLY WITH SUBSTITUTE (S-1) `committee-passage`
- **2023-10-24** SUBSTITUTE (S-1) CONCURRED IN
- **2023-10-24** PLACED ON ORDER OF THIRD READING WITH SUBSTITUTE (S-1)
- **2023-10-26** PASSED ROLL CALL # 596 YEAS 22 NAYS 16 EXCUSED 0 NOT VOTING 0 `passage`
- **2023-10-26** INSERTED FULL TITLE
- **2023-10-31** returned from Senate with substitute (S-1) with full title
- **2023-10-31** laid over one day under the rules
- **2023-11-02** Senate substitute (S-1) concurred in
- **2023-11-02** roll call Roll Call # 469 Yeas 97 Nays 12 Excused 0 Not Voting 1
- **2023-11-02** full title agreed to
- **2023-11-02** bill ordered enrolled
- **2023-12-31** presented to the Governor 11/27/2023 03:00 PM `executive-receipt`
- **2023-12-31** approved by the Governor 12/06/2023 10:40 AM `executive-signature`
- **2023-12-31** filed with Secretary of State 12/06/2023 01:14 PM
- **2023-12-31** assigned PA 271'23

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/0e8a4d0f-08bf-4acf-b9b4-0471e34f47a7`. Confidence: reported (aggregated from official Michigan legislature records).