Alcoa Unit Outlines San Diego Layoffs: Alcoa Electronic Packaging Inc. said it will lay off virtually all of its roughly 600 regular employees on March 3 and that it has terminated its agreement covering another 600 contract employees. All of the employees work at the company's San Diego plant, which makes ceramic packages for microprocessors. Alcoa Electronic Packaging said the job cuts follow its Dec. 21 announcement that computer chip maker Intel Corp., its principal customer, would give the company no new orders. Alcoa Electronic Packaging is a subsidiary of Pittsburgh-based Aluminum Co. of America. Alcoa Electronic Packaging said it continues to review its options for the business.