Disney’s ‘Fantasmic!’ Cast to Vote on Merging With Broader Union

A small group of unionized Disneyland Resort performers will get to vote on joining a broader, longstanding unit at the company’s theme parks in Southern California, the National Labor Relations Board ordered.

The NLRB on Wednesday reversed a regional director’s decision that rejected a union’s bid to let the smaller group of workers—performers in a show called “Fantasmic!”—join the unit of workers who perform in shows throughout Disneyland and Disneyland California Adventure.

The decision comes amid increased labor activity at Walt Disney Co.’s Golden State theme parks in the past year.

The company headed off a strike this summer ...