Union leaders say unless there is a breakthrough soon, they will notify workers it's starting a 72-hour countdown clock - that's the amount of notice required before a strike could start.
The United Food and Commercial Workers represents employees at QFC, Safeway, Albertsons and Fred Meyer stores in six counties across the region.
Union members voted by a 98 percent margin to authorize a strike if negotiations fail, and workers have been making picket signs in recent days in case of a strike.
Some of the biggest sticking points are still over health and pension issues.
The possibility of a strike has many customers on edge.
The stores are already looking for replacement workers.