United Auto Workers has raised concerns regarding the may target for reopening automobile plants. Several auto manufacturers are preparing to reopen U.S.-based factories, with some being slated to open as early as May 4.

The union voiced concerns over the decision by some major automakers to reopen factories as early as next week. In a statement released last week, the union stated, "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. We have not done enough testing to really understand the threat our members face."

"We strongly suggest to our companies in all sectors that an early May date is too soon and too risky to our members, their families and their communities," said UAW President Rory Gamble.

General Motors (GM  ) has addressed the concerns raised by the UAW, claiming that, while there was no set date for a full factory restart, the company has been meeting with government officials and sharing updated safety protocols with the UAW. GM has already begun the process of recalling some workers to help plan and prepare for the process of restarting production. Gamble has voiced his approval of the willingness of companies to cooperate and consult with the UAW in ensuring that proper procedures are put in place when workers eventually do return to work.

In Michigan, Governor Gretchen Whitmer has been in discussion with the leadership of GM, Ford (F  ), and Fiat-Chrysler (FCAU  ) as well as UAW leadership. Michigan has since extended its stay-at-home directive to May 15, though whether this will affect discussions between automakers and the UAW as to when factories should reopen remains to be seen.

For automakers whose workers are not represented by the UAW, however, including Volkswagen (VWAGY  ) and Toyota (TM  ), factories are already slated to reopen as early as next week. Subaru (FUJHY  ) plans to reopen US plants the following week on May 11, while Nissan (NSANY  ) is hoping to open factories by mid-May.