| Ex. MT-038 | Governor's letter to the Association of Montana Public Health Officials (AMPHO) clarifying the Phase Two 50-person gathering limitationLetter to AMPHO, September 4, 2020 (Phase Two gathering limitation does not apply to school-related or youth activities) | Governor Steve Bullock | MontanaState | Sept. 4, 2020 | 2020 Q32020 Q4 | Gathering capEvents and venues | Primary source read | |
| Ex. MT-048 | Order of Health Officer October 12, 2020 (12:30 a.m. close for bars and restaurants; 25-person gathering cap; masks and distancing required)Order of Health Officer, October 12, 2020 | John Felton, Local Public Health Officer, City-County of Yellowstone | Yellowstone County, MontanaCounty | Oct. 12, 2020 | 2020 Q4 | Capacity limitGathering capFace-covering requirementCurfew and hoursAlcohol and barsEvents and venues | Primary source read | |
| Ex. MT-052 | Order of Health Officer November 19, 2020 (25-person cap; 10 p.m. to 4 a.m. closure of all places of assembly; 50 percent capacity; congregate care order continued)Order of Health Officer, November 19, 2020 | John Felton, Local Public Health Officer, City-County of Yellowstone | Yellowstone County, MontanaCounty | Nov. 19, 2020 | 2020 Q42021 Q1 | Capacity limitGathering capFace-covering requirementHealth care ordersCurfew and hoursAlcohol and barsEvents and venues | Primary source read | |
| Ex. DUT-MT-018 | Press release and letter, 'AG Knudsen Orders Dismissal of COVID Curfew Case Against Rocking R Bar in Gallatin County' (Gallatin City-County Board of Health and Health Officer Matt Kelley v. Rocking R Bar, Gallatin County Cause No. DV-20-1278B)AG Knudsen Orders Dismissal of COVID Curfew Case Against Rocking R Bar in Gallatin County | Attorney General Austin Knudsen, Montana Department of Justice (press release with the full text of the supervisory letter to Gallatin County Attorney Marty Lambert) | MontanaState | Jan. 14, 2021 | 2020 Q42021 Q1 | Standing dutyBusiness closureCurfew and hoursStanding duty | Primary source read | |
| Ex. DUT-MT-005 | Mont. Code Ann. 50-2-118Powers and duties of local health officers | Montana Legislature (Montana Code Annotated, Title 50, ch. 2) | MontanaState | Sept. 28, 2026 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Standing dutyBusiness closureGathering capEvents and venuesQuarantine and isolationStanding duty | Primary source read | |
| Ex. DUT-MT-029 | Mont. Code Ann. 50-2-116 (Powers and duties of local boards of health) (cross-reference to Ex. MT-073)Powers and duties of local boards of health, including the 2021 limits of subsection (5) and the enforcement saving clause of subsection (7) | Montana Legislature (Mont. Code Ann. 50-2-116, as amended by Ch. 324 and Ch. 408, L. 2021 (HB 121, approved Apr. 16, 2021; HB 257, approved May 7, 2021)) | MontanaState | Apr. 16, 2021 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Standing dutyBusiness closureQuarantine and isolationStanding dutyOperating condition | Primary source read | |
| Ex. MT-073 | Mont. Code Ann. 50-2-116, Powers and duties of local boards of health, as amended in 2021 (HB 121: governing-body control of emergency health orders; HB 257: local rules may not compel businesses to deny customer access)Mont. Code Ann. 50-2-116. Powers and duties of local boards of health (MCA 2025 text with 2021 amendments) | Montana Legislature (67th): HB 121 (approved Apr. 16, 2021) and HB 257 (approved May 7, 2021 after an amendatory veto); codified at Mont. Code Ann. 50-2-116(4)-(9) (amd. Sec. 4, Ch. 324, L. 2021; amd. Sec. 8, Ch. 408, L. 2021) | MontanaState | May 7, 2021 | 2021 Q22021 Q3 | Events and venuesVaccination or testingOther | Primary source read | |
| Ex. DUT-MT-001 | Mont. Code Ann. 50-1-202General powers and duties (Department of Public Health and Human Services) | Montana Legislature (Montana Code Annotated, Title 50, ch. 1) | MontanaState | Sept. 28, 2026 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Standing dutyBusiness closureQuarantine and isolationStanding duty | Primary source read | |
| Ex. DUT-MT-002 | Mont. Code Ann. 50-1-203Public health inspections | Montana Legislature (Montana Code Annotated, Title 50, ch. 1) | MontanaState | Sept. 28, 2026 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Standing dutyBusiness closureStanding dutyOperating condition | Primary source read | |
| Ex. DUT-MT-008 | Mont. Code Ann. 10-3-104General authority of governor | Montana Legislature (Montana Code Annotated, Title 10, ch. 3) | MontanaState | Sept. 28, 2026 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Standing dutyEmergency declarationStay-at-homeBusiness closureTravel and quarantineStanding duty | Primary source read | |