FORT WORTH, Texas — RadioShack Corp. notified about 400 workers by e-mail that they were being dismissed immediately as part of planned job cuts.

Employees at the Fort Worth headquarters got messages Tuesday morning saying: "The work force reduction notification is currently in progress. Unfortunately your position is one that has been eliminated."

Company officials told employees in a series of meetings that layoff notices would be sent electronically, spokeswoman Kay Jackson said.

RadioShack has closed nearly 500 stores, consolidated distribution centers and liquidated slow-moving merchandise in an effort to shake out of a sales slump.