---
type: "Bill"
title: "Mental health: involuntary treatment."
description: "Mental health: involuntary treatment."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20012002"
identifier: "AB 1424"
citation: "California AB 1424 (20012002)"
classification: ["bill"]
subjects: ["Mental health: involuntary treatment."]
status: "enacted"
primary_sponsors: ["Thomson"]
version_count: 10
action_count: 32
vote_count: 8
first_action: "2001-02-23"
last_action: "2001-10-04"
source: "openstates"
source_identifier: "ocd-bill/ff57b74c-d8c9-4607-b86a-1c56763b06d6"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200120020AB1424"
source_hash: "a3be5331aea242730d833c7bd50d26d62ce6295d995a617af552032bbd389cee"
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-ca"]
---

# California AB 1424 (20012002) — Mental health: involuntary treatment.

## Version chain

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

1. **02/23/01 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB1424&version=20010AB142499INT)
2. **03/29/01 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB1424&version=20010AB142498AMD)
3. **04/16/01 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB1424&version=20010AB142497AMD)
4. **04/18/01 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB1424&version=20010AB142496AMD)
5. **05/01/01 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB1424&version=20010AB142495AMD)
6. **07/18/01 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB1424&version=20010AB142494AMD)
7. **08/28/01 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB1424&version=20010AB142493AMD)
8. **10/04/01 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB1424&version=20010AB142491CHP)
9. **AB1424** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200120020AB1424)
10. **09/06/01 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB1424&version=20010AB142492ENR)

## Votes

- Do pass as amended and be re-referred to the Committee on Appropriations. — **pass** (pass) · lower
- AB 1424 Thomson Assembly Third Reading — **pass** (pass) · lower
- AB 1424 Thomson Concurrence in Senate Amendments — **pass** (pass) · lower
- Do pass. — **pass** (pass) · lower
- Do pass as amended and be re-referred to the Committee on Judiciary. — **pass** (pass) · lower
- Do pass, but re-refer to the Committee on Appropriations. — **pass** (pass) · upper
- Assembly 3rd Reading AB1424 Thomson By Kuehl — **pass** (pass) · upper
- Do pass as amended, and re-refer to the Committee on Judiciary. — **pass** (pass) · upper

## Sponsors

- Thomson — primary (person)
- Aroner — coauthor (person)
- Koretz — coauthor (person)
- Kuehl — coauthor (person)

## Timeline

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

- **2001-10-04** Chaptered by Secretary of State - Chapter 506, Statutes of 2001.
- **2001-10-04** Approved by the Governor. `executive-signature`
- **2001-09-20** Enrolled and to the Governor at 11:30 a.m.
- **2001-09-06** Senate amendments concurred in. To enrollment. (Ayes 79. Noes 0. Page 3490.) `committee-passage-favorable, amendment-passage`
- **2001-09-05** In Assembly. Concurrence in Senate amendments pending. May be considered on or after September 7 pursuant to Assembly Rule 77.
- **2001-09-04** Read third time, passed, and to Assembly. (Ayes 29. Noes 4. Page 2576.) `passage, reading-1, reading-3`
- **2001-08-28** Read second time, amended, and to third reading. `reading-2, reading-1, amendment-passage`
- **2001-08-27** From committee: Be placed on second reading file pursuant to Senate Rule 28.8 and be amended. `amendment-passage, committee-passage`
- **2001-08-22** From committee: Do pass, and re-refer to Standing Committee on Appropriations Re-referred. (Ayes 5. Noes 1.). `committee-passage-favorable, referral-committee, committee-passage`
- **2001-07-24** (Corrected July 20. )
- **2001-07-18** Read second time, amended, and re-referred to Standing Committee on Judiciary. `reading-2, reading-1, referral-committee, amendment-passage`
- **2001-07-17** From committee: Amend, do pass as amended, and re-refer to Standing Committee on Judiciary (Ayes 7. Noes 1.). `amendment-introduction, referral-committee, committee-passage, amendment-passage`
- **2001-06-12** Referred to H. & H.S. and Standing Committee on Judiciary. `referral-committee`
- **2001-06-05** In Senate. Read first time. To Standing Committee on Rules for assignment. `reading-1`
- **2001-06-04** Read third time, passed, and to Senate. (Ayes 78. Noes 0. Page 2051.) `passage, reading-1, reading-3`
- **2001-05-31** From committee: Do pass. (Ayes 21. Noes 0.) (May 31). Read second time. To third reading. `reading-2, committee-passage-favorable, reading-1, committee-passage`
- **2001-05-29** Joint Rule 62(a), file notice waived. (Page 1856.)
- **2001-05-23** In committee: Set, first hearing. Referred to Standing Committee on Appropriations suspense file. `referral-committee`
- **2001-05-07** Re-referred to Standing Committee on Appropriations. `referral-committee`
- **2001-05-01** Read second time and amended. `reading-2, amendment-passage, reading-1`
- **2001-04-30** From committee: Amend, do pass as amended, and re-refer to Standing Committee on Appropriations (Ayes 9. Noes 0.) (April 24). `amendment-introduction, referral-committee, committee-passage, amendment-passage`
- **2001-04-23** Re-referred to Standing Committee on Judiciary. `referral-committee`
- **2001-04-18** From committee chair, with author's amendments: Amend, and re-refer to Standing Committee on Judiciary Read second time and amended. `reading-2, referral-committee, reading-1, amendment-introduction, amendment-passage`
- **2001-04-17** Re-referred to Standing Committee on Judiciary. `referral-committee`
- **2001-04-16** Read second time and amended. `reading-2, amendment-passage, reading-1`
- **2001-04-05** From committee: Amend, do pass as amended, and re-refer to Standing Committee on Judiciary (Ayes 12. Noes 0.) (April 3). `amendment-introduction, referral-committee, committee-passage, amendment-passage`
- **2001-04-05** Re-referred to Standing Committee on Health. `referral-committee`
- **2001-03-29** From committee chair, with author's amendments: Amend, and re-refer to Standing Committee on Health. Read second time and amended. `reading-2, referral-committee, reading-1, amendment-introduction, amendment-passage`
- **2001-03-22** Referred to Standing Committee on Health and Standing Committee on Judiciary. `referral-committee`
- **2001-02-26** Read first time. `reading-1`
- **2001-02-25** From printer. May be heard in committee March 27.
- **2001-02-23** Introduced. To print. `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/ff57b74c-d8c9-4607-b86a-1c56763b06d6`. Confidence: reported (aggregated from official California legislature records).