---
type: "Bill"
title: "Workers' compensation: cancer: firefighters and peace officers."
description: "Workers' compensation: cancer: firefighters and peace officers."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "19992000"
identifier: "AB 539"
citation: "California AB 539 (19992000)"
classification: ["bill"]
subjects: ["Workers' compensation: cancer: firefighters and peace officers."]
status: "enacted"
primary_sponsors: ["Papan"]
version_count: 6
action_count: 22
vote_count: 8
first_action: "1999-02-18"
last_action: "1999-10-10"
source: "openstates"
source_identifier: "ocd-bill/03a4f2bf-47d2-4c96-bbe0-433bf83dc526"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=199920000AB539"
source_hash: "63d3f5bdcfc9769498b16d8b8649949ff992fe87c65b5071c29120227fbf9b5c"
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 539 (19992000) — Workers' compensation: cancer: firefighters and peace officers.

## Version chain

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

1. **02/18/99 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=199920000AB539&version=19990AB53999INT)
2. **05/25/99 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=199920000AB539&version=19990AB53998AMD)
3. **09/02/99 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=199920000AB539&version=19990AB53997AMD)
4. **10/10/99 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=199920000AB539&version=19990AB53995CHP)
5. **AB539** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=199920000AB539)
6. **09/08/99 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=199920000AB539&version=19990AB53996ENR)

## Votes

- AB 539 PAPAN THIRD READING — **pass** (pass) · lower
- Do pass. — **pass** (pass) · lower
- Placed on Appropriations suspense file. — **pass** (pass) · upper
- Do pass as amended. — **pass** (pass) · upper
- AB 539 PAPAN CONCURRENCE — **pass** (pass) · lower
- Do pass, but re-refer to the Committee on Appropriations. — **pass** (pass) · upper
- Assembly 3rd Reading AB539 Papan By Baca — **pass** (pass) · upper
- Do pass and be re-referred to the Committee on Appropriations. — **pass** (pass) · lower

## Sponsors

- Papan — primary (person)
- Lempert — coauthor (person)

## Timeline

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

- **1999-10-10** Chaptered by Secretary of State - Chapter 595, Statutes of 1999.
- **1999-10-05** Approved by the Governor. `executive-signature`
- **1999-09-16** Enrolled and to the Governor at 12:15 p.m.
- **1999-09-08** Assembly Rule 77 suspended. Senate amendments concurred in. To enrollment. (Ayes 67. Noes 10. Page 4081.) `committee-passage-favorable, amendment-passage`
- **1999-09-07** In Assembly. Concurrence in Senate amendments pending. May be considered on or after September 9 pursuant to Assembly Rule 77.
- **1999-09-07** Read third time, passed, and to Assembly. (Ayes 24. Noes 5. Page 2965.) `passage, reading-3, reading-1`
- **1999-09-02** From committee: Amend, and do pass as amended. (Ayes 8. Noes 3.). Read second time and amended. Ordered to third reading. `amendment-introduction, amendment-passage, committee-passage, reading-2, reading-1`
- **1999-08-23** Joint Rule 61 (a) suspended.
- **1999-08-16** In committee: Placed on Appropriations suspense file.
- **1999-07-12** In committee: Set, first hearing. Hearing canceled at the request of author.
- **1999-06-24** From committee: Do pass, and re-refer to Standing Committee on Appropriations Re-referred. (Ayes 5. Noes 1.). `committee-passage, committee-passage-favorable, referral-committee`
- **1999-06-07** Referred to Com. on I.R. `referral-committee`
- **1999-06-02** In Senate. Read first time. To Standing Committee on Rules for assignment. `reading-1`
- **1999-06-01** Read third time, passed, and to Senate. (Ayes 72. Noes 5. Page 2175.) `passage, reading-3, reading-1`
- **1999-05-28** From committee: Do pass. (Ayes 18. Noes 3.) (April 26). Read second time. To third reading. `committee-passage, committee-passage-favorable, reading-2, reading-1`
- **1999-05-26** Re-referred to Standing Committee on Appropriations. `referral-committee`
- **1999-05-25** From committee chair, with author's amendments: Amend, and re-refer to Standing Committee on Appropriations Read second time and amended. `amendment-introduction, amendment-passage, reading-2, reading-1, referral-committee`
- **1999-04-21** In committee: Set, first hearing. Referred to Standing Committee on Appropriations suspense file. `referral-committee`
- **1999-03-25** From committee: Do pass, and re-refer to Standing Committee on Appropriations Re-referred. (Ayes 11. Noes 1.) (March 24). `committee-passage, committee-passage-favorable, referral-committee`
- **1999-03-04** Referred to Standing Committee on Insurance. `referral-committee`
- **1999-02-19** From printer. May be heard in committee March 21.
- **1999-02-18** Read first time. To print. `reading-1`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/03a4f2bf-47d2-4c96-bbe0-433bf83dc526`. Confidence: reported (aggregated from official California legislature records).