The group Workers Stand for America says Saturday's rally is designed to call "public and media attention to how our politics, society and economy have been skewed beyond recognition --geared almost entirely to the well-being of the richest while everyone else is left behind."
"This is not acceptable in a nation that was built on generations of labor," the group, created by the International Brotherhood of Electrical Workers and AFL-CIO, said Friday in a release.
The rally is timed to precede both the Republican National Convention in Florida and the Democratic National Convention in North Carolina to make sure both parties are getting the message, labor leaders said.
"A strong and prosperous America can't be measured by the stock market or gross domestic product, but by economic opportunity and hope -- hope that our children and grandchildren will have the same shot at the American dream that we did," the group said.
Notable deaths of 2014 [PHOTOS]