Labor needs representation because often votes are taken.
Meetings are held in SF, LA, San Diego, Sacramento, etc. Discuss safety and health with co-workers and your union rep. Don't be forced to choose between your life and your job, remember that you don't go to work to die. If you see something wrong, speak out. You may want to do this despite the fact that enforcement under Labor Code 6311 by the California Division of Labor Standards Enforcement is not very effective, and despite the fact that the law in this area constantly changes.