Janus v. AFSCME
E208010
Janus v. AFSCME is a landmark 2018 U.S. Supreme Court decision that held public-sector unions cannot require nonmembers to pay agency fees, significantly weakening union funding and power.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Janus v. AFSCME canonical | 2 |
| Janus v. AFSCME majority opinion | 1 |
| Janus v. American Federation of State, County, and Municipal Employees, Council 31 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1868439 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Janus v. AFSCME Context triple: [Samuel A. Alito Jr., notableCase, Janus v. AFSCME]
-
A.
Hague v. CIO
Hague v. CIO is a 1939 U.S. Supreme Court case that significantly shaped First Amendment jurisprudence by affirming protections for public assembly and speech in public forums.
-
B.
Wards Cove Packing Co. v. Atonio
Wards Cove Packing Co. v. Atonio is a 1989 U.S. Supreme Court case that narrowed the standards for proving employment discrimination under Title VII, prompting Congress to later revise those standards in the Civil Rights Act of 1991.
-
C.
United Public Workers v. Mitchell
United Public Workers v. Mitchell is a 1947 U.S. Supreme Court case that upheld the constitutionality of the Hatch Act’s restrictions on federal employees’ political activities.
-
D.
McDonnell Douglas Corp. v. Green
McDonnell Douglas Corp. v. Green is a 1973 U.S. Supreme Court decision that established the key burden-shifting framework for proving employment discrimination under Title VII.
-
E.
United States v. Darby
United States v. Darby is a 1941 U.S. Supreme Court case that upheld federal labor regulations under the Commerce Clause and marked a broad expansion of federal power over economic activity.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Janus v. AFSCME Target entity description: Janus v. AFSCME is a landmark 2018 U.S. Supreme Court decision that held public-sector unions cannot require nonmembers to pay agency fees, significantly weakening union funding and power.
-
A.
Hague v. CIO
Hague v. CIO is a 1939 U.S. Supreme Court case that significantly shaped First Amendment jurisprudence by affirming protections for public assembly and speech in public forums.
-
B.
Wards Cove Packing Co. v. Atonio
Wards Cove Packing Co. v. Atonio is a 1989 U.S. Supreme Court case that narrowed the standards for proving employment discrimination under Title VII, prompting Congress to later revise those standards in the Civil Rights Act of 1991.
-
C.
United Public Workers v. Mitchell
United Public Workers v. Mitchell is a 1947 U.S. Supreme Court case that upheld the constitutionality of the Hatch Act’s restrictions on federal employees’ political activities.
-
D.
McDonnell Douglas Corp. v. Green
McDonnell Douglas Corp. v. Green is a 1973 U.S. Supreme Court decision that established the key burden-shifting framework for proving employment discrimination under Title VII.
-
E.
United States v. Darby
United States v. Darby is a 1941 U.S. Supreme Court case that upheld federal labor regulations under the Commerce Clause and marked a broad expansion of federal power over economic activity.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
First Amendment case
ⓘ
United States Supreme Court case ⓘ labor law case ⓘ |
| affectedAreaOfLaw |
public employee speech rights
ⓘ
public-sector labor law ⓘ union security agreements ⓘ |
| argumentDate | 2018-02-26 ⓘ |
| category |
2018 in United States case law
ⓘ
United States Supreme Court cases ⓘ
surface form:
United States Supreme Court cases of the Roberts Court
United States labor case law ⓘ |
| citation |
138 S. Ct. 2448 (2018)
ⓘ
201 L. Ed. 2d 924 (2018) ⓘ 585 U.S. ___ (2018) ⓘ |
| constitutionalProvisionInterpreted | First Amendment to the United States Constitution ⓘ |
| decisionDate | 2018-06-27 ⓘ |
| dissentingOpinionBy | Elena Kagan ⓘ |
| docketNumber | 16-1466 ⓘ |
| fullName |
Janus v. AFSCME
self-linksurface differs
ⓘ
surface form:
Janus v. American Federation of State, County, and Municipal Employees, Council 31
|
| holding |
Mandatory agency fees for public employees who are nonmembers violate the First Amendment
ⓘ
Public-sector unions may not extract agency fees from nonconsenting nonmembers ⓘ |
| impact |
Prompted states and unions to revise membership and dues-collection practices
ⓘ
Weakened bargaining power of many public-sector unions in the United States ⓘ |
| joinedDissent |
Ruth Bader Ginsburg
ⓘ
Sonia Sotomayor ⓘ Stephen G. Breyer ⓘ |
| joinedMajority |
Anthony M. Kennedy
ⓘ
Clarence Thomas ⓘ John G. Roberts Jr. ⓘ Neil M. Gorsuch ⓘ |
| jurisdiction | Supreme Court of the United States ⓘ |
| legalIssue |
First Amendment free speech rights of public employees
ⓘ
constitutionality of public-sector union agency fees ⓘ |
| lowerCourt | United States Court of Appeals for the Seventh Circuit ⓘ |
| majorityOpinionBy | Samuel A. Alito Jr. ⓘ |
| originatedFrom | Illinois ⓘ |
| overruledCase | Abood v. Detroit Board of Education ⓘ |
| overruledPrecedentYear | 1977 ⓘ |
| petitioner | Mark Janus ⓘ |
| respondent |
AFSCME Council 31
ⓘ
American Federation of State, County and Municipal Employees ⓘ
surface form:
American Federation of State, County, and Municipal Employees, Council 31
|
| result |
Public-sector unions cannot require nonmembers to pay agency or fair-share fees
ⓘ
Significantly reduced funding mechanisms for public-sector unions ⓘ |
| shortName | Janus v. AFSCME self-link ⓘ |
| term | 2017 term of the U.S. Supreme Court ⓘ |
| topic |
agency fees
ⓘ
collective bargaining ⓘ public-sector unions ⓘ union dues ⓘ |
| voteSplit | 5-4 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Janus v. AFSCME Description of subject: Janus v. AFSCME is a landmark 2018 U.S. Supreme Court decision that held public-sector unions cannot require nonmembers to pay agency fees, significantly weakening union funding and power.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Janus v. AFSCME majority opinion
this entity surface form:
Janus v. American Federation of State, County, and Municipal Employees, Council 31