| Ex. SEC-10-024 | Ballotpedia, Documenting Michigan's path to recovery from the coronavirus (COVID-19) pandemic, 2020-2021 (secondary chronology)Secondary source for: MIOSHA extension of the COVID-19 workplace emergency rules on Apr. 13, 2021 'through Oct. 14' [2021]; the rules'… | Ballotpedia (secondary source) recording MIOSHA and Governor actions | MichiganState | June 22, 2021 | 2020 Q42021 Q12021 Q2 | Telework mandateFace-covering requirementWorkplace rules | Confirmed from a secondary source | |
| Ex. ECO-B-106 | Ballotpedia, 'School responses to the coronavirus (COVID-19) pandemic during the 2020-2021 academic year'State-by-State chronology of 2020-21 reopening orders, statewide closures (Kentucky Nov. 23, 2020; Michigan Nov. 18, 2020), in-person… | Ballotpedia (secondary source; Burbio data) | United States (50 States and D.C.)Other | July 8, 2021 | 2020 Q32020 Q42021 Q12021 Q2 | Schools and child care | Confirmed from a secondary source | |
| Ex. ECO-B-105 | Ballotpedia, 'School responses to the coronavirus (COVID-19) pandemic during the 2019-2020 academic year'State-by-State chronology of spring 2020 school closure orders and announcements, with total students affected per State (NCES) | Ballotpedia (secondary source; student counts from NCES) | United States (50 States and D.C.)Other | June 30, 2020 | 2020 Q2 | Schools and child care | Confirmed from a secondary source | |
| Ex. ECO-B-107 | Ballotpedia, 'School responses to the coronavirus (COVID-19) pandemic during the 2021-2022 academic year'State-by-State table of 2021-22 school mask requirements and bans (instrument type and end date) and teacher/staff vaccination requirements… | Ballotpedia (secondary source) | United States (50 States and D.C.)Other | Aug. 1, 2022 | 2021 Q3 | Face-covering requirementSchools and child careVaccination or testing | Confirmed from a secondary source | |
| Ex. ECO-B-108 | Ballotpedia, 'State employee vaccine requirements during the coronavirus (COVID-19) pandemic, 2021-2023'State-by-State table of vaccination or testing requirements for State employees announced July 26 - September 2021 with effective dates (CA… | Ballotpedia (secondary source) | United States (50 States)Other | Dec. 31, 2021 | 2021 Q3 | Workplace rulesVaccination or testing | Confirmed from a secondary source | |