Walt Disney exhibited strong opposition to unionization efforts at his studio, including hostile actions during the 1941 animators' strike, though the studio eventually became unionized.
Walt Disney was anti-union.

FactVerify
Source: factverify.com
Key Evidence
The 1941 Disney animators' strike was a major labor conflict where Walt Disney actively opposed unionization efforts and took retaliatory actions against strikers.
en.wikipedia.orgen.wikipedia.orgDisney animators' strike
zinnedproject.orgzinnedproject.orgMay 29, 1941: Disney Animators’ Strike
After federal mediation, Disney signed agreements making the studio a union shop.
zinnedproject.orgzinnedproject.orgMay 29, 1941: Disney Animators’ Strike
Reports also indicate he fired employees involved in union organizing and held anti-union views stronger than many peers.
quora.comquora.comWas Walt Disney a union buster?
animationguild.organimationguild.orgThe Disney Strike, 1941
What the Evidence Shows
The claim that Walt Disney was anti-union can be broken down into two main components: his personal stance toward unions and the actions taken by him and his company regarding unionization. Evidence shows that Disney was notably hostile to union efforts in his studio, particularly during the 1941 Disney animators' strike. He resisted unionization, attempted to undermine strikers, and reportedly fired employees involved in organizing unions.
This opposition was stronger than that of many contemporaries in the animation industry. However, after federal mediation and pressure, Disney's studio ultimately became a union shop and has remained so since. While Disney's anti-union stance was clear during the strike period, the eventual acceptance of unions at his company adds nuance to the claim.
Additionally, some sources note that Disney blamed labor unrest on political agitators such as Communists, reflecting the era's tensions. Overall, the evidence supports that Walt Disney was anti-union in practice and attitude during critical moments but does not suggest a permanent or absolute rejection of unions once established.