The 36-hour work stoppage started at 5 a.m and included workers from Green Fleet Systems, American Logistics International and Pac 9 Transportation.
Truck drivers from Green Fleet Systems and American Logistics International say they were retaliated against after trying to join the International Brotherhood of Teamsters.
Green Fleet Systems drivers staged a similar protest in August.
Drivers at Pac 9 Transportation say they were classified as "independent contractors" instead of being listed as full-time employees. Picket lines were set up at all three companies, all of which are based in Carson.
Green Fleet Systems released a statement Monday morning criticizing the strike.
“Green Fleet is discouraged to learn that the organizations behind this strike are continuing to spend their members’ hard-earned money to battle an issue that the