Automakers have been announcing plans to restart production in early May, but the UAW argues that it's still too early to safely send workers back to work, citing insufficient scientific data, according to Reuters.

"At this point in time, the UAW does not believe the scientific data is conclusive that it is safe to have our members back in the workplace," said Rory Gamble, president of the UAW. "We have not done enough testing to really understand the threat our members face."

Gamble said that the UAW was happy with automakers' response to the coronavirus threat, but argues that a May date is "too soon and too risky to our members, their families, and their communities."

Automakers such as GM are facing pressure to resume work. Falling sales, a lack of production, and a weak economy have all conspired to make this an expensive time for automakers.

Although automakers, such as GM, have all implemented new measures at their plants, such as disinfection and physical distancing, no medical sources have been cited as informing these measures. The simple risk of being around other people in a confined space still puts workers at risk.