DAYTON DAILY NEWS                   Copyright (c) 1997, Dayton Newspapers Inc.DATE: Monday, August 4, 1997                TAG: 9708040159EDITION: CITY          SECTION: NEWS        PAGE: 1A SOURCE: By Kevin Galvin Associated Press                                     LABOR                               UPS STRIKE STARTS * Competing delivery services will not be able to take up the slack.    WASHINGTON - The Teamsters union struck United Parcel Service early todayafter talks with the nation's largest package delivery service broke down overissues ranging from part-time work to pensions.   ``We have exhausted every possible approach to try to resolve theproblem,'' Teamsters President Ron Carey declared as he left the bargainingtable late Sunday night. ``At this point it's just a waste of time.''   Workers at UPS offices and distribution centers around the country walkedoff the job at 12:01 a.m. Rival carriers are unlikely to be able to absorb UPSdeliveries.   The company's 2,000 pilots, under a separate union, pledged Sunday to walkout with the nearly 185,000 Teamsters.   The only thing they were waiting for was word from the negotiators inWashington.   Ellis Wood, business agent for Teamsters 957 - the local union thatrepresents more than 775 employees at four Miami Valley UPS facilities - hassaid local UPS Teamsters would be ready to form a picket line as soon asnegotiations fell through.   The last comparable job action was an 18-day walkout at two Dayton GM brakefactories in 1996, which stopped GM assembly and idled 177,000 workers.