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---
type: "Bill"
title: "Workers' compensation: cancer presumption."
description: "Existing law establishes a workers' compensation system, administered by the Administrative Director of the Division of Workers' Compensation, to compensate an employee for injuries sustained in the course of his or her employment. Existing law provides that in the case of active firefighting members of certain fire departments and in the case of certain peace officers, a compensable injury includes cancer that develops or manifests itself during the period when the firefighter or peace officer demonstrates that he or she was exposed while in the service of the public agency to a known carcinogen, as defined. Existing law establishes a presumption that the cancer in these cases arose out of, and in the course of, employment, unless the presumption is controverted by evidence that the primary site of the cancer has been established and that the carcinogen to which the member has demonstrated exposure is not reasonably linked to the disabling cancer."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20112012"
identifier: "AB 585"
citation: "California AB 585 (20112012)"
classification: ["bill"]
subjects: ["Workers' compensation: cancer presumption."]
status: "enacted"
primary_sponsors: ["Fong"]
version_count: 9
action_count: 32
vote_count: 8
first_action: "2011-02-16"
last_action: "2011-10-07"
source: "openstates"
source_identifier: "ocd-bill/3bd4c4c3-3322-4929-b3ec-a64d6d5b211b"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201120120AB585"
source_hash: "fd2b0bb0b455e038f1e8b9421d9fd6ec535a32d29a3ba90ea1fd8f12fa84f138"
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 585 (20112012) — Workers' compensation: cancer presumption.
Existing law establishes a workers' compensation system, administered by the Administrative Director of the Division of Workers' Compensation, to compensate an employee for injuries sustained in the course of his or her employment. Existing law provides that in the case of active firefighting members of certain fire departments and in the case of certain peace officers, a compensable injury includes cancer that develops or manifests itself during the period when the firefighter or peace officer demonstrates that he or she was exposed while in the service of the public agency to a known carcinogen, as defined. Existing law establishes a presumption that the cancer in these cases arose out of, and in the course of, employment, unless the presumption is controverted by evidence that the primary site of the cancer has been established and that the carcinogen to which the member has demonstrated exposure is not reasonably linked to the disabling cancer.
## Version chain
The bill's text revisions, in order — the diff chain from filing to enrollment.
1. **02/16/11 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB585&version=20110AB58599INT)
2. **03/31/11 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB585&version=20110AB58598AMD)
3. **04/25/11 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB585&version=20110AB58597AMD)
4. **06/21/11 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB585&version=20110AB58596AMD)
5. **07/12/11 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB585&version=20110AB58595AMD)
6. **08/24/11 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB585&version=20110AB58594AMD)
7. **10/07/11 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB585&version=20110AB58592CHP)
8. **AB585** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201120120AB585)
9. **09/19/11 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB585&version=20110AB58593ENR)
## Votes
- Do pass, to Consent Calendar. — **160** (pass) · lower
- AB 585 FONG Concurrence in Senate Amendments — **722** (pass) · lower
- Do pass and be re-referred to the Committee on Appropriations. — **90** (pass) · lower
- Do pass and be re-referred to the Committee on Revenue and Taxation. — **70** (pass) · lower
- Do pass as amended. — **60** (pass) · upper
- amendments be concurred in. — **121** (pass) · lower
- 3rd Reading AB585 Fong By Alquist — **333** (pass) · upper
- AB 585 FONG Consent Calendar Second Day — **780** (pass) · lower
## Sponsors
- Fong — primary (person)
- Alquist — principal coauthor (person)
- Leno — coauthor (person)
- Lieu — coauthor (person)
- Liu — coauthor (person)
- Portantino — principal coauthor (person)
## Timeline
The legislative action history — every referral, reading, and vote.
- **2011-02-16** Read first time. To print. `reading-1`
- **2011-02-17** From printer. May be heard in committee March 19.
- **2011-03-31** Referred to Com. on H. & C.D. `referral-committee`
- **2011-03-31** From committee chair, with author's amendments: Amend, and re-refer to Com. on H. & C.D. Read second time and amended. `reading-2, amendment-introduction, reading-1, amendment-passage`
- **2011-04-04** Re-referred to Com. on H. & C.D. `referral-committee`
- **2011-04-25** From committee chair, with author's amendments: Amend, and re-refer to Com. on H. & C.D. Read second time and amended. `reading-2, amendment-introduction, reading-1, amendment-passage`
- **2011-04-25** Re-referred to Com. on H. & C.D. `referral-committee`
- **2011-04-28** From committee: Do pass and re-refer to Com. on REV. & TAX. (Ayes 7. Noes 0.) (April 27). Re-referred to Com. on REV. & TAX. `referral-committee, committee-passage, committee-passage-favorable`
- **2011-05-03** From committee: Do pass and re-refer to Com. on APPR. (Ayes 9. Noes 0.) (May 2). Re-referred to Com. on APPR. `referral-committee, committee-passage, committee-passage-favorable`
- **2011-05-12** From committee: Do pass. To consent calendar. (Ayes 16. Noes 0.) (May 11). `committee-passage, committee-passage-favorable`
- **2011-05-16** Read second time. Ordered to consent calendar. `reading-2, reading-1`
- **2011-05-19** Read third time. Passed. Ordered to the Senate. (Ayes 78. Noes 0. Page 1451.) `reading-3, reading-1, passage`
- **2011-05-19** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2011-06-02** Referred to Coms. on T. & H. and GOV. & F. `referral-committee`
- **2011-06-09** In committee: Set, first hearing. Hearing canceled at the request of author.
- **2011-06-21** From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on T. & H. `reading-2, amendment-introduction, reading-1, amendment-passage, referral-committee`
- **2011-06-23** Withdrawn from committee.
- **2011-06-23** Re-referred to Com. on RLS. `referral-committee`
- **2011-06-23** Re-referred to Com. on L. & I.R. `referral-committee`
- **2011-07-11** From committee: Do pass as amended. (Ayes 6. Noes 0.) (July 6). `amendment-passage, committee-passage, committee-passage-favorable`
- **2011-07-12** Read second time and amended. Ordered to third reading. `reading-2, reading-1, amendment-passage`
- **2011-08-24** Read third time and amended. Ordered to second reading. `reading-3, reading-1, amendment-passage`
- **2011-08-25** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2011-08-30** Read third time. Passed. Ordered to the Assembly. (Ayes 33. Noes 3. Page 2138.). `reading-3, reading-1, passage`
- **2011-08-31** In Assembly. Concurrence in Senate amendments pending. May be considered on or after September 2 pursuant to Assembly Rule 77.
- **2011-09-01** Re-referred to Com. on INS. pursuant to Assembly Rule 77.2. `referral-committee`
- **2011-09-09** Joint Rule 62(a), file notice suspended. (Page 3180.)
- **2011-09-09** From committee: That the Senate amendments be concurred in. (Ayes 12. Noes 1.) (September 9). `committee-passage`
- **2011-09-09** Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 72. Noes 2. Page 3234.). `committee-passage-favorable, amendment-passage`
- **2011-09-21** Enrolled and presented to the Governor at 3:30 p.m.
- **2011-10-07** Approved by the Governor. `executive-signature`
- **2011-10-07** Chaptered by Secretary of State - Chapter 550, Statutes of 2011.
## Source
OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/3bd4c4c3-3322-4929-b3ec-a64d6d5b211b`. Confidence: reported (aggregated from official California legislature records).