in the united states which type of workers are the most likely to be unionized ​
Labor unions in the United States In the 21st century the most prominent unions are among public sector employees such as city employees, government workers, teachers and police. Members of unions are disproportionately older, male, and residents of the Northeast, the Midwest, and California.[4] Union workers average 10-30% higher pay than non-union in the United States after controlling for individual, job, and labor market characteristics.[5]