---
type: "Bill"
title: "Workers' Compensation - Medical Presumptions for Diseases and Cancer - Eligibility (Firefighter Jesse McCullough's Cancer Protection Law)"
description: "Workers' Compensation - Medical Presumptions for Diseases and Cancer - Eligibility (Firefighter Jesse McCullough's Cancer Protection Law)"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2019"
identifier: "SB 646"
citation: "Maryland SB 646 (2019)"
classification: ["bill"]
subjects: ["Workers' Compensation", "Death", "Disabilities", "Diseases", "Emergency Medical Services", "Fire Protection", "Health", "Occupational Safety", "Rescue Squads", "Workers' Compensation", "Work", "Labor and Employment"]
status: "enacted"
primary_sponsors: ["Klausmeier"]
version_count: 1
action_count: 17
vote_count: 2
first_action: "2019-02-04"
last_action: "2019-04-30"
source: "openstates"
source_identifier: "ocd-bill/6a51c06d-3935-4a71-a059-07f821a7a32b"
source_url: "http://mgaleg.maryland.gov/webmga/frmMain.aspx?id=SB646&stab=01&pid=billpage&tab=subject3&ys=2019rs"
source_hash: "eb8b7696e332d8b4db72f6a24613e8d8dc27764f9147d45aa96f9f1a24be2f73"
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-md"]
---

# Maryland SB 646 (2019) — Workers' Compensation - Medical Presumptions for Diseases and Cancer - Eligibility (Firefighter Jesse McCullough's Cancer Protection Law)

## Version chain

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

1. **Bill Text** (committee substitute) — [source](http://mgaleg.maryland.gov/2019RS/bills/sb/sb0646f.pdf)

## Votes

- On Third Reading — **47–0** (pass) · upper
- On Third Reading — **130–4** (pass) · lower

## Sponsors

- Klausmeier — primary (person)
- Benson — cosponsor (person)
- Elfreth — cosponsor (person)
- Guzzone — cosponsor (person)
- Hayes — cosponsor (person)
- Hester — cosponsor (person)
- McCray — cosponsor (person)
- Peters — cosponsor (person)
- Washington — cosponsor (person)

## Timeline

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

- **2019-02-04** First Reading Finance `referral-committee`
- **2019-02-05** Hearing 2/19 at 1:00 p.m.
- **2019-03-21** Favorable with Amendments Report by Finance `committee-passage-favorable`
- **2019-03-21** Favorable with Amendments {207275/1 Report Adopted `committee-passage-favorable`
- **2019-03-21** Second Reading Passed with Amendments
- **2019-03-22** Motion Returned Second Reading (Senator Klausmeier) Adopted
- **2019-03-22** Floor Amendment {953421/1 (Senator Klausmeier) Adopted `amendment-passage`
- **2019-03-22** Second Reading Passed with Amendments
- **2019-03-25** Third Reading Passed (47-0) `passage`
- **2019-03-26** First Reading House Rules and Executive Nominations `referral-committee`
- **2019-03-26** Rereferred to Economic Matters
- **2019-04-03** Favorable Report by Economic Matters `committee-passage-favorable`
- **2019-04-03** Favorable Report Adopted `committee-passage-favorable`
- **2019-04-03** Second Reading Passed
- **2019-04-04** Third Reading Passed (130-4) `passage`
- **2019-04-05** Returned Passed
- **2019-04-30** Approved by the Governor - Chapter 216 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/6a51c06d-3935-4a71-a059-07f821a7a32b`. Confidence: reported (aggregated from official Maryland legislature records).