R.R. Donnelley & Sons Co., the nation's largest printer, fired two employees Wednesday, bringing to three the number of workers dismissed for giving advance copies of Business Week articles to a stockbroker, a company spokesman said.

The names of the employees were not released, but a spokesman said a previously suspended worker at the company's Torrance, Calif., printing plant was fired and a second worker was dismissed in Old Saybrook, Conn.Donnelley, a commercial printing firm, announced Monday it had fired one worker for providing advance copies of Business Week's "Inside Wall Street" column to William Dillon, a former stockbroker with Merrill Lynch & Co.

The commercial printing firm also suspended a worker at its Torrance plant in connection with the expanding investigation by the Securities and Exchange Commission, the nation's major exchanges, Business Week and several companies that launched internal inquiries after suspicious trading was detected in stocks mentioned in the Business Week column. That suspended worker was fired Wednesday.