NEW YORK (Standard&Poor's CreditWire) Nov. 3, 1999--Standard&Poor's today assigned its triple-'B'-plus rating to the Euro 375 million convertible notes due 2004, issued by Meridian B.V. and guaranteed by Adecco S.A. Issue proceeds will be used to help fund the 1999 purchases of Delphi Group PLC, Career Staff Co. Ltd. of Japan, and the proposed acquisition of the generalist and information technology staffing businesses of Olsten Corp. In addition, Standard&Poor's assigned its triple-'B'-plus corporate credit rating to Adecco. The rating outlook is stable. The triple-'B'-minus corporate credit, bank loan, and senior unsecured debt ratings for Olsten Corp. remain on CreditWatch with positive implications, where they were placed Aug. 19, 1999. Olsten's senior unsecured debt, which