Lyndhurst's effort opened the door for the Buena Park employees, Zapcic said. The California show features 50 cast members, who had already been discussing safety problems due to being overworked, she said, and had gathered signatures for a union petition by late July. The Buena Park location did not respond to CNN's request for comment.

They filed a petition with the NLRB on July 22, and a date for a vote has not been set.

In June, employees of the Lyndhurst castle went to a labor conference in Chicago, which was also attended by some of the dancers from North Hollywood's Star Garden club.

One of the dancers, who goes by the stage name Velveeta, said she is among 18 workers who have been locked out of Star Garden since March. She asked CNN to identify her only by her professional name, for fear of being blacklisted or stalked.

Velveeta said she had witnessed a dancer being pulled by her shoe across the stage by a customer, another being slapped and others being inappropriately touched by customers.

Multiple attorneys told CNN it is illegal in Los Angeles for customers to touch dancers in strip clubs. Yet Velveeta said the owners ran the establishment assuming the customer was always right, with one of them frequently dismissing dancers' complaints as merely "starting drama."

Lyndhurst's effort opened the door for the Buena Park employees, Zapcic said. The California show features 50 cast members, who had already been discussing safety problems due to being overworked, she said, and had gathered signatures for a union petition by late July. The Buena Park location did not respond to CNN's request for comment.

They filed a petition with the NLRB on July 22, and a date for a vote has not been set.

In June, employees of the Lyndhurst castle went to a labor conference in Chicago, which was also attended by some of the dancers from North Hollywood's Star Garden club.

One of the dancers, who goes by the stage name Velveeta, said she is among 18 workers who have been locked out of Star Garden since March. She asked CNN to identify her only by her professional name, for fear of being blacklisted or stalked.

Velveeta said she had witnessed a dancer being pulled by her shoe across the stage by a customer, another being slapped and others being inappropriately touched by customers.

Multiple attorneys told CNN it is illegal in Los Angeles for customers to touch dancers in strip clubs. Yet Velveeta said the owners ran the establishment assuming the customer was always right, with one of them frequently dismissing dancers' complaints as merely "starting drama."