Drivers gathered before sunrise, carrying signs and wearing reflective safety vests as they began picketing company trucks.
Low fines and lack of jail terms for heads of firms that disobey or disregard safety provide little incentive for companies to obey the law.
On May 1, 2015 in Chicago, the community gathered around the memorial for the Haymarket Martyrs.
The drivers demand that trucking firms recognize them as employees and bargain with them if they select the Teamsters.
"The labor movement's doors are open to any candidate who's serious about transforming our economy with high and rising wages."
Unions observe Workers Memorial Day to remember those who have suffered and died on the job and to renew our efforts for safe workplaces.
Here are some recent lower court cases involving workers.
In a follow-up to Workers Memorial Day, OSHA will stage the largest occupational safety event ever next month.
"The practice to remove more persons from the right-of-ways of American railroads endangers the general public."
"The same forces that want to privatize the postal system and oppose voting rights want to keep the federal sub-minimum wage just like it is."