Updated 09/27/2017

General Motors' decision to halt its third shift could eliminate up to 680 jobs.

According to the Daily Herald, the company made the number public when it filed its official warn notice to the State Department Of Labor And Workforce Development.

The notice called the action a permanent layoff effective November 27th.  

The exact impact will not be determined until the production schedule is recalibrated.

In the layoff, 305 temporary workers will be let go. The rest will be determined by seniority. With an announcement of a new investment into the plant could bring some of those workers back.  

This layoff will be the largest Spring Hill layoff since November 2009.