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 Legal Sidebari 
 
Status of Federal COVID-19 Vaccination 
Mandate Litigation 
Updated February 7, 2022 
In 2021, various federal, state, and private entities instituted Coronavirus Disease 2019 (COVID-19) 
vaccination requirements to address the pandemic, particularly as the Delta variant—a highly contagious 
strain of SARS-CoV-2 (the virus that causes COVID-19)—spread in the United States. The federal 
COVID-19 vaccination requirements issued to date by the President or executive agencies include those 
directed at (1) federal executive agency civilian employees (federal employee mandate); (2) federal 
contractors for executive departments, agencies, and offices (federal contractor mandate); (3) most 
Medicare- and Medicaid-certified providers and suppliers (Centers for Medicare and Medicaid Services’ 
[CMS’s] Medicare/Medicaid provider mandate); (4) employers with 100 or more employees 
(Occupational Safety and Health Administration’s [OSHA’s] large employer vaccination and testing 
mandate); and (5) staff of the Head Start program, which provides comprehensive early childhood 
education and development services to low-income children (Head Start mandate). These employment- or 
workforce-based mandates—subject to accommodations required by federal law—either directly require 
certain employees to receive COVID-19 vaccinations or direct certain employers to impose a vaccination 
or vaccination-and-testing requirement on their employees or staff.  
These federal vaccination mandates have generated numerous legal challenges that have moved quickly 
through the courts. To date, some of these mandates have been enjoined by courts either on a nationwide 
basis or only in certain states. Table 1 below provides a summary of the mandates and their statuses. (For 
more detailed analysis of these mandates and related litigation, see CRS Report R46745, State and 
Federal Authority to Mandate COVID-19 Vaccination, by Wen W. Shen.) 
Congressional Research Service 
https://crsreports.congress.gov 
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CRS Legal Sidebar 
Prepared for Members and  
 Committees of Congress 
 
  
 
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Table 1. Summary of Federal Nonmilitary COVID-19 Vaccination Mandates 
As of February 7, 2022 
Covered 
Federal 
Statutory 
Individuals/
Vaccination 
Compliance 
Mandate 
Authority 
Entities  
Requirement 
Deadline(s) 
Status 
Federal 
5 U.S.C. 
Federal executive 
Employees must be ful y 
Receive a one-dose 
Enjoined by court.b 
Employee 
§§ 3301, 
branch employees 
vaccinateda unless granted a 
vaccine or two-
Mandate 
3302, 7301 
legally required exception 
dose vaccine series 
(Executive 
based on a disability/medical 
by November 8, 
Order 14,043) 
condition or a sincerely held  2021. 
religious belief. 
Be ful y vaccinated 
Remote-working employees 
by November 22, 
are subject to requirement. 
2021. 
Federal 
40 U.S.C. 
Federal 
Covered contractors must 
As of January 18, 
Enjoined by courts: 
Contractor 
§ 101 et seq.;  contractors/
ensure covered contractor-
2022, covered 
Kentucky v. Biden, 
(Executive 
3 U.S.C. 
subcontractors 
employees are ful y 
contractor-
No. 21-6147), 2022 
Order 14,042) 
§ 301 
that have a 
vaccinated, except in 
employees must be 
WL 43178 (6th Cir. 
covered contract 
circumstances where an 
ful y vaccinated on 
Jan. 5, 2022) 
with executive 
employee is legally entitled 
the first day of 
(declining to stay the 
departments and 
to an exemption based on a 
performance on a 
district court’s 
agencies 
disability/medical condition 
new contract or the  preliminary 
or a sincerely held religious 
renewal, extension, 
injunction in KY, 
belief. 
or exercised option 
OH, and TN); 
Remote-working covered 
of an existing 
Georgia v. Biden, 
contractor-employees are 
contract. 
No. 1:21-cv-00163 
subject to requirement. 
2021 WL 5779939 
(S.D. Ga. Dec. 7, 
2021) (enjoined the 
vaccination 
requirement 
nationwide). 
  
Congressional Research Service 
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Covered 
Federal 
Statutory 
Individuals/
Vaccination 
Compliance 
Mandate 
Authority 
Entities  
Requirement 
Deadline(s) 
Status 
CMS’s 
42 U.S.C. 
Specified provider 
Covered providers and 
Phase 1: 
In effect. 
Medicare/ 
§§ 1302, 
and supplier types 
suppliers must ensure 
(1) covered 
 
Medicaid 
1395hh, and 
that participate in 
covered staff who directly 
providers and 
Provider 
other 
Medicare and 
provide care or other 
suppliers must 
 
Mandate 
provider- or 
Medicaid 
services for their facilities 
establish and begin 
(CMS IFR) 
supplier-
and/or patients are ful y 
to implement the 
specific 
vaccinated, except in 
vaccination policies 
provisions 
circumstances where a staff 
and (2) covered 
member is legally entitled to 
staff must receive 
an exemption based on a 
first dose of a two-
disability/medical condition 
dose vaccine or a 
or a sincerely held religious 
one-dose vaccine. 
belief.  
 
January 27, 
Staff who work 100% 
2022 (in all 
remotely from sites of 
other 
patient care or away from 
jurisdictions 
onsite staff are not subject 
not listed in 
to the requirement. 
bul ets below)  
 
February 14, 
2022 (in AL, 
AK, AZ, AR, 
GA, ID, IN, IA, 
KS, KY, LA, 
MS, MO, MT, 
NE, NH, ND, 
OH, OK, SC, 
SD, UT, WV, 
WY) 
 
February 22, 
2022 (in TX) 
Phase 2: Covered 
staff must complete 
two-dose vaccine 
series by February 
28, 2022. 
 
February 28, 
2022 (in all 
other 
jurisdictions 
not listed in 
bul ets below) 
 
March 15, 
2022 (in AL, 
AK, AZ, AR, 
GA, ID, IN, IA, 
KS, KY, LA, 
MS, MO, MT, 
NE, NH, ND, 
OH, OK, SC, 
SD, UT, WV, 
WY) 
 
March 21, 
2022 (in TX) 
  
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Covered 
Federal 
Statutory 
Individuals/
Vaccination 
Compliance 
Mandate 
Authority 
Entities  
Requirement 
Deadline(s) 
Status 
OSHA’s 
29 U.S.C. 
In all jurisdictions, 
A covered employer must 
Covered employers 
Stayed by the U.S. 
Large 
§ 655(c) 
private employers 
establish and enforce a 
must establish and 
Supreme Court. 
Employer 
with 100 or more 
policy that either 
begin to implement 
(See Nat’l Fed. of 
Vaccination 
employees. 
(1) ensures employees are 
the vaccination 
Indep. Bus. v. Dep’t 
and Testing 
In 26 states, 
ful y vaccinated, except in 
policies by January 
of Labor, No. 
Mandate 
Puerto Rico, and 
circumstances where an 
10, 2022. 
21A244, ---S. Ct.---, 
(OSHA ETS) 
the U.S. Virgin 
employee is legally entitled 
Covered employees  2022 WL 120952 
Islands with 
to an exemption based on a 
must receive either 
(Jan. 13, 2022))  
OSHA-approved 
disability/medical condition 
a one-dose vaccine 
state plans, state 
or sincerely held religious 
or a two-dose 
and local 
belief; or (2) requires 
vaccine series, or 
government 
employees to be ful y 
begin regular testing 
employers with 
vaccinated or provide proof 
by February 9, 
100 or more 
of regular COVID-19 testing  2022. 
employees. 
and wear a face covering 
when indoors. 
 
Employees who work 
remotely, at a site where 
other people are not 
present, or exclusively 
outside are not subject to 
the requirements. 
Head Start 
42 U.S.C. 
Head Start staff 
Head start staff must be ful y  Receive a one-dose 
Enjoined by courts in 
Mandate 
§ 9836a(a)(1
vaccinated unless granted a 
vaccine or two-
25 states: 
)(C), (D), (E) 
legally required exception 
dose vaccine series 
Texas v. Becerra, 
based on a disability/medical 
by January 31, 2022.  No. 5:21-cv-300, 
condition or a sincerely held 
2021 WL 6198109 
religious belief.c 
(N.D. Tex. Dec. 31, 
2021) (enjoining the 
mandate in TX); 
Louisiana v. Becerra, 
No. 3:21-cv-4370, 
2022 WL 16571 
(W.D. La. Jan. 1, 
2022) (enjoining the 
mandate in AL, AK, 
AZ AR, FL, GA, IN, 
IA. KS, KY, LA, MI, 
MO, MT, NE, ND, 
OH, OK, SC, SD, 
TN, UT, WV, WY) 
Source: CRS analysis of the relevant Executive Orders, CMS IFR, and OSHA ETS as well as related litigation. 
a.  For purposes of the relevant Executive Orders, CMS IFR, and OSHA ETS, individuals are considered “ful y 
vaccinated” for COVID-19 two weeks after they have received either a one-dose vaccine or a two-dose vaccine 
series.   
b.  The federal employee mandate was enjoined by court on January 21, 2022, after the compliance deadline. Thus, the 
injunction suspends only enforcement of the mandate against employees who have not yet complied as of January 21, 
2022.  
c.  The Head Start mandate also includes a masking requirement for individuals two years of age or older when indoors. 
  
Congressional Research Service 
5 
Author Information 
 
Wen W. Shen 
   
Legislative Attorney 
 
 
 
 
Disclaimer 
This document was prepared by the Congressional Research Service (CRS). CRS serves as nonpartisan shared staff 
to congressional committees and Members of Congress. It operates solely at the behest of and under the direction of 
Congress. Information in a CRS Report should not be relied upon for purposes other than public understanding of 
information that has been provided by CRS to Members of Congress in connection with CRS’s institutional role. 
CRS Reports, as a work of the United States Government, are not subject to copyright protection in the United 
States. Any CRS Report may be reproduced and distributed in its entirety without permission from CRS. However, 
as a CRS Report may include copyrighted images or material from a third party, you may need to obtain the 
permission of the copyright holder if you wish to copy or otherwise use copyrighted material. 
 
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