The Hershey Co., whose name has been synonymous with U.S. candy making for more than a century, is moving a bigger chunk of its production to Mexico. A day after Valentine sweethearts across the country enjoyed bags of Hershey Kisses, the company on Thursday announced a restructuring plan that will scale back its work force by 1,500 jobs and force some plants to close.

Hershey said the three-year blueprint would reduce the number of production lines by more than one-third while saving the company as much as $190 million a year.