A contract offer made to nearly 3,000 employees by US confectionery giant Hershey Foods Corp last week has been rejected, leaving worker representatives to warn that a strike has been planned for Friday morning. Bruce Hummel, a spokesman for the Chocolate Workers local 464, a part of the Bakery, Confectionery, Tobacco Workers and Grain Millers International Union, explained that by giving Hershey notification, the company had time to clean the manufacturing lines if the workers walk off the job.