HB 342 Montana House · 2025 Regular Session

Revise civil liability laws to provide a statutory duty of care for certain actions

HB 342 establishes a statutory duty of care for licensed health care providers in medical malpractice actions. It requires providers to offer care consistent with the skill and learning reasonably used by others in the same specialty and with the same certification. Individuals claiming a violation must establish this standard of care using competent evidence, including qualified expert testimony. The bill clarifies that the existence of risks does not change the established standard of care.
Bill status signed all 5 stages cleared
Introduction
Jan 2025
Committee Review
Mar 2025
House Passage
Apr 2025
Senate Passage
Apr 2025
Signed into Law
May 2025
Introduced Jan 29, 2025 Signed May 5, 2025
Maddy AI version diff · 2 comparisons

What changed between versions

HB0342_1(6).pdf HB0342_X.pdf · 1 edit
MINOR
The bill text was reformatted to remove redundant introductory lines and consolidate the title and sponsors into a standard enrolled bill layout. The substantive legal content, including the duty of care rules, codification instructions, effective dates, and applicability, remains identical to the previous version.
Scope change
No change to the bill's scope or applicability; the legal provisions are unchanged.
TECHNICAL

Removed redundant introductory text and reorganized the layout to match standard enrolled bill formatting without altering any legal provisions.

Floor votes · Senate Apr 9, 2025 · House Feb 13, 2025

How they voted

3217
Passed · 1 other
Total votes 50
Apr 9, 2025
D Democratic18
2 Yea 16 Nay
88% Nay
R Republican32
30 Yea 1 Nay 1
93% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
46
Key actions
9
Committee
6
May 1, 2025
Signed into law
(H) Signed by Governor
lower
Apr 22, 2025
Upper · Passed
(S) Signed by President
upper
Apr 18, 2025
Lower · Passed
(H) Signed by Speaker
lower
Apr 9, 2025
Senate · Passed
Senate Vote: pass (32-17-1)
senate
Mar 26, 2025
Upper · Passed
(S) Committee Report - (S) Business, Labor and Economic Affairs
upper
Mar 26, 2025
Upper · Passed
(S) Committee Executive Action - (S) Business, Labor and Economic Affairs
upper
Feb 14, 2025
Committee
(S) Referred to Committee - (S) Business, Labor and Economic Affairs
upper
Feb 13, 2025
House · Passed
House Vote: pass (57-42-1)
house
Feb 6, 2025
Lower · Passed
(H) Committee Report - (H) Business and Labor
lower
Feb 6, 2025
Lower · Passed
(H) Committee Executive Action - (H) Business and Labor
lower
Jan 30, 2025
Committee
(H) Referred to Committee - (H) Business and Labor
lower
Jan 29, 2025
Introduced
(H) Introduced
lower
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Bill Mercer
Bill Mercer
RRepublican
MT
52