Free · All 50 states + DC · Updated annually
Which nurses unionize where.
Major nurse unions present in each state, approximate union density, and right-to-work status. Use it when evaluating an assignment, considering relocation, or organizing your unit.
What these terms mean
"Right-to-work"
A state law that says you cannot be required to join a union or pay dues as a condition of employment, even at a unionized facility. You still get the contract's protections, but you can opt out of dues. Critics argue this weakens unions financially; supporters argue it protects worker freedom. Currently 26 US states have right-to-work laws.
"Non-right-to-work"
In these states, a unionized facility can require all employees in the bargaining unit to pay dues or "agency fees" as a condition of employment. This generally produces higher union density and more bargaining power. RNs in these states are ~3× more likely to be union members than in right-to-work states (BLS data, 2024).
"RN union density"
The approximate percentage of RNs in a state who are either union members OR covered by a union contract. High (≥20%), Medium (10–19%), Low (3–9%), Minimal (<3%). Estimates derived from BLS Current Population Survey + NNU/state-affiliate reported memberships; treat as directional, not precise.
Sources
- National Nurses United (NNU) — the largest US RN union; state affiliates and bargaining-unit lists.
- BLS Current Population Survey — union membership and coverage data by state and industry.
- AFL-CIO — Service Employees International Union (SEIU), Communications Workers of America (CWA), and other federations representing nurses.
- State Nurses Associations (ANA constituents) — many serve as bargaining units in non-NNU states.
- National Right to Work Legal Defense Foundation — current right-to-work state roster.
Right-to-work means workers cannot be required to join or pay dues to a union as a condition of employment. It applies even at unionized facilities. Data current 2026.