The United Auto Workers union is on strike at three different factories. We ask the Wall Street Journal's Nora Eckert what the union workers want, and management professor Marick Masters explains why the Detroit Big Three are reluctant to give it to them.

This episode was produced by Jon Ehrens and Miles Bryan, edited by Miranda Kennedy, fact-checked by Amanda Lewellyn with help from Hady Mawajdeh and Amina Al-Sadi, engineered by Patrick Boyd and hosted by Noel King.

Transcript at vox.com/todayexplained

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