---
type: "Bill"
title: "Concerning the duties of industrial insurance self-insured employers and third-party administrators."
description: "Concerning the duties of industrial insurance self-insured employers and third-party administrators."
jurisdiction: "us/states/wa"
legislature: "Washington Legislature"
session: "2023-2024"
identifier: "HB 1521"
citation: "Washington HB 1521 (2023-2024)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Bronoske"]
version_count: 3
action_count: 36
vote_count: 4
first_action: "2023-01-23"
last_action: "2023-05-04"
source: "openstates"
source_identifier: "ocd-bill/7df763b8-9361-4d8f-be01-8995e0d3e95d"
source_url: "http://apps.leg.wa.gov/billinfo/summary.aspx?bill=1521&year=2023"
source_hash: "3aa6d3f5aae08b2ce4676935f9faf3891630d1369e1b24a2d3e0085246056648"
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-wa"]
---

# Washington HB 1521 (2023-2024) — Concerning the duties of industrial insurance self-insured employers and third-party administrators.

## Version chain

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

1. **Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/House%20Bills/1521.htm)
2. **Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/House%20Bills/1521-S.htm)
3. **Substitute Passed Legislature** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/House%20Passed%20Legislature/1521-S.PL.htm)

## Votes

- 3rd Reading & Final Passage as Amended by the Senate (#18) — **29–19** (pass) · upper
- Final Passage as Amended by the Senate (#4) — **84–14** (pass) · lower
- 3rd Reading & Final Passage as Amended by the Senate (#13) — **32–17** (pass) · upper
- 3rd Reading & Final Passage (#20) — **69–27** (pass) · lower

## Sponsors

- Bronoske — primary (person)
- Berry — cosponsor (person)
- Pollet — cosponsor (person)
- Stonier — cosponsor (person)
- Wylie — cosponsor (person)

## Timeline

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

- **2023-01-23** First reading, referred to Labor & Workplace Standards. `reading-1`
- **2023-02-01** Public hearing in the House Committee on Labor & Workplace Standards at 8:00 AM.
- **2023-02-14** Executive action taken in the House Committee on Labor & Workplace Standards at 10:30 AM.
- **2023-02-14** LAWS - Majority; 1st substitute bill be substituted, do pass. `substitution`
- **2023-02-14** Minority; without recommendation. `committee-passage-unfavorable`
- **2023-02-16** Referred to Rules 2 Review. `referral-committee`
- **2023-02-28** Rules Committee relieved of further consideration. Placed on second reading. `reading-2`
- **2023-03-01** 1st substitute bill substituted (LAWS 23). `substitution`
- **2023-03-01** Rules suspended. Placed on Third Reading. `reading-3`
- **2023-03-01** Third reading, passed; yeas, 69; nays, 27; absent, 0; excused, 2. `reading-3`
- **2023-03-03** First reading, referred to Labor & Commerce. `reading-1`
- **2023-03-14** Public hearing in the Senate Committee on Labor & Commerce at 10:30 AM.
- **2023-03-23** Executive action taken in the Senate Committee on Labor & Commerce at 8:00 AM.
- **2023-03-23** LC - Majority; do pass. `committee-passage-favorable`
- **2023-03-23** Minority; do not pass. `committee-passage-unfavorable`
- **2023-03-23** Minority; without recommendation. `committee-passage-unfavorable`
- **2023-03-24** Passed to Rules Committee for second reading.
- **2023-04-07** Placed on second reading by Rules Committee. `reading-2`
- **2023-04-10** Floor amendment(s) adopted.
- **2023-04-10** Rules suspended. Placed on Third Reading. `reading-3`
- **2023-04-10** Third reading, passed; yeas, 32; nays, 17; absent, 0; excused, 0. `reading-3`
- **2023-04-13** House refuses to concur in Senate amendments. Asks Senate to recede from amendments.
- **2023-04-20** Senate receded from amendments.
- **2023-04-20** Rules suspended.
- **2023-04-20** Returned to second reading for amendment.
- **2023-04-20** Floor amendment(s) adopted.
- **2023-04-20** Rules suspended. Placed on Third Reading. `reading-3`
- **2023-04-20** Third reading, passed; yeas, 29; nays, 19; absent, 0; excused, 1. `reading-3`
- **2023-04-22** House concurred in Senate amendments.
- **2023-04-22** Passed final passage; yeas, 84; nays, 14; absent, 0; excused, 0. `passage`
- **2023-04-23** Speaker signed. `passage`
- **2023-04-23** President signed. `passage`
- **2023-04-23** Delivered to Governor. `executive-receipt`
- **2023-05-04** Governor signed. `executive-signature`
- **2023-05-04** Chapter 293, 2023 Laws. `became-law`
- **2023-05-04** Effective date 7/1/2024. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/7df763b8-9361-4d8f-be01-8995e0d3e95d`. Confidence: reported (aggregated from official Washington legislature records).