---
type: "Bill"
title: "Generally revise laws related to licensed addiction counselors"
description: "Generally revise laws related to licensed addiction counselors"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2021"
identifier: "SB 166"
citation: "Montana SB 166 (2021)"
classification: ["bill"]
subjects: ["Alcohol and Drugs", "Professions and Occupations Generally", "Professions and Occupations E-N"]
status: "enacted"
primary_sponsors: ["Terry Gauthier"]
version_count: 3
action_count: 49
vote_count: 6
first_action: "2020-12-13"
last_action: "2021-04-29"
source: "openstates"
source_identifier: "ocd-bill/91c55ec3-cf87-4109-921d-052c168498f8"
source_url: "http://laws.leg.mt.gov/legprd/LAW0210W$BSIV.ActionQuery?P_BILL_NO1=166&P_BLTP_BILL_TYP_CD=SB&Z_ACTION=Find&P_SESS=20211"
source_hash: "fb307fded1fd30772621dbd9cc254ff5b522cf9831e0dedd46fa57b68876da6d"
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-mt"]
---

# Montana SB 166 (2021) — Generally revise laws related to licensed addiction counselors

## Version chain

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

1. **SB0166_1.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2021/SB0199//SB0166_1.pdf)
2. **SB0166_X.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2021/SB0199//SB0166_X.pdf)
3. **Enrolled** (enrolled) — [source](https://leg.mt.gov/bills/2021/billpdf/SB0166.pdf)

## Votes

- BE CONCURRED IN — **19–0** (pass) · lower
- Do Concur — **96–0** (pass) · lower
- Do Concur — **99–1** (pass) · lower
- Do Pass — **50–0** (pass) · upper
- Do Pass — **49–0** (pass) · upper
- DO PASS — **10–0** (pass) · upper

## Sponsors

- Terry Gauthier — primary (person)

## Timeline

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

- **2020-12-13** Draft Request Received
- **2021-01-06** Draft to Requester for Review
- **2021-01-07** Draft to Requester for Review
- **2021-01-19** Draft in Legal Review
- **2021-01-21** Draft in Edit
- **2021-01-24** Draft to Drafter - Edit Review
- **2021-01-25** Draft in Input/Proofing
- **2021-01-25** Draft in Final Drafter Review
- **2021-01-25** Bill Draft Text Available Electronically
- **2021-01-25** Executive Director Review
- **2021-01-25** Draft in Assembly
- **2021-01-25** Draft Ready for Delivery
- **2021-01-25** Executive Director Final Review
- **2021-01-26** Draft Ready for Delivery
- **2021-01-27** Draft Delivered to Requester
- **2021-01-27** Introduced `introduction`
- **2021-01-27** Introduced Bill Text Available Electronically
- **2021-01-28** Fiscal Note Requested
- **2021-01-28** First Reading `reading-1`
- **2021-01-28** Referred to Committee - (S) Business, Labor, and Economic Affairs `referral-committee`
- **2021-02-03** Fiscal Note Received
- **2021-02-03** Fiscal Note Signed
- **2021-02-04** Fiscal Note Printed
- **2021-02-05** Hearing - (S) Business, Labor, and Economic Affairs
- **2021-02-09** Committee Executive Action--Bill Passed - (S) Business, Labor, and Economic Affairs `committee-passage`
- **2021-02-09** Committee Report--Bill Passed - (S) Business, Labor, and Economic Affairs `committee-passage`
- **2021-02-11** Scheduled for 2nd Reading
- **2021-02-11** 2nd Reading Passed `reading-2`
- **2021-02-12** Scheduled for 3rd Reading
- **2021-02-12** 3rd Reading Passed `passage, reading-3`
- **2021-02-12** Transmitted to House
- **2021-02-16** Referred to Committee - (H) Human Services `referral-committee`
- **2021-02-16** First Reading `reading-1`
- **2021-03-18** Hearing - (H) Human Services
- **2021-03-26** Committee Executive Action--Bill Concurred - (H) Human Services
- **2021-03-29** Committee Report--Bill Concurred - (H) Human Services
- **2021-04-08** Scheduled for 2nd Reading
- **2021-04-08** 2nd Reading Concurred `reading-2`
- **2021-04-09** Scheduled for 3rd Reading
- **2021-04-09** 3rd Reading Concurred `passage, reading-3`
- **2021-04-09** Returned to Senate
- **2021-04-12** Sent to Enrolling
- **2021-04-15** Returned from Enrolling
- **2021-04-15** Printed - Enrolled Version Available
- **2021-04-22** Signed by President
- **2021-04-23** Signed by Speaker
- **2021-04-23** Transmitted to Governor `executive-receipt`
- **2021-04-28** Signed by Governor `executive-signature`
- **2021-04-29** Chapter Number Assigned `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/91c55ec3-cf87-4109-921d-052c168498f8`. Confidence: reported (aggregated from official Montana legislature records).