The union announced the walkout, effective immediately, late Wednesday on social media, saying Ford "refuses to make further movement in bargaining."

The automaker said it will use fans from the seats of F-150s and portable battery packs to build up to 1,000 respirators per month. It's also planning to make 100,000 face masks per week and to help...

The automaker hopes to win over skeptics and speed up EV adoption among retail and commercial buyers by electrifying the nation's bestselling vehicle, while making it the most powerful F-150.

If ratified, the deal would provide roughly 57,000 hourly workers with 25 percent raises over four years and bring an end to a 6-week-old strike.