Twenty thousand Ontario auto workers are waiting to hear whether they’ll be on the assembly lines or the picket lines tomorrow.

The Canadian Auto Workers Union is now concentrating its efforts on securing a deal with Ford as the midnight deadline for a walkout looms.

The union went into negotiations pointing out that it wanted to be rewarded for concessions it made when the three automakers were struggling. But union president Ken Lewenza is warning his members they may not get everything they want.

Tonight’s deadline could be pushed back if there is progress.

The CAW is hoping a deal with Ford will be used as the basis for negotiations with GM and Chrysler.