May 11, 1981

Two groups that are often in conflict, city officials and labor leaders, met here for a weekend conference with a common concern - the migration of people and businesses from New York City - and a common goal - greater worker productivity and improved services that might halt that migration. ''It's very difficult to manage a city like New York with 2,000 managers,'' said Nathan Leventhal, Deputy Mayor for Operations, noting that the city had 180,000 government workers. Union leaders, like Victor Gotbaum and Harold Melnick, said that change among top managers in city government posed an obstacle to improving productivity and municipal services. There has been ''no continuity of management,'' said Mr. Gotbaum, president of District Council 37 of the American Federation of State, County and Municipal Employees. Mr. Melnick, president of the Sergeants Benevolent Association, added that ''the top in most of the agencies never talks to the bottom.'' Carol Bellamy, City Council President, agreed in part with the union men, saying that she thought the city did not manage its workers well. ''I consider it a miracle when two city agencies talk to each other,'' Miss Bellamy said.

Fresh from a House of Representatives victory for the Reagan Administration last week on its budget, Treasury Donald T. Regan said today that the White House was counting on popular support to ''give us the victory'' for the Kemp-Roth tax cut of 30 percent over three years. But two House Democratic leaders expressed doubt today that President Reagan could translate his popularity and momentum from his budget victory into enactment of the tax cut plan. Representative Dan Rostenkowski of Illinois, chairman of the Ways and Means Committee, said that ''unless commitments have changed,'' the Democrats and some Republicans on the panel would prefer a less extensive one-year tax cut that he has proposed, or some compromise. Mr. Rostenkowski and Thomas S. Foley, the Democratic majority whip, both called the Reagan-backed Kemp-Roth plan dangerously inflationary.

A New York State project to dredge up and safely re-bury poisonous chemical contaminants from up to 40 ''hot spots'' in the Hudson River north of Albany has been approved by the Federal Environmental Protection Agency. The cleanup of the contaminants, known as PCB's, or polychlorinated biphenyls, is to be financed with $20 million voted by Congress last year and at least $6.7 million in state funds. The project is aimed at reducing the contamination in striped bass and other fish and at safeguarding drinking water supplies and air quality. It is not, however, expected to reduce significantly the concentrations of PCB's in New York Harbor.

Charlie Lea pitched the first no-hitter in the major leagues this season as the Montreal Expos beat the San Francisco Giants today, 4-0, in the second game of a doubleheader. The Giants won the opener, 5-1. Lea, a right-hander, struck out a career high of eight batters and walked four. He became the first Expo to pitch a no-hitter since Bill Stoneman did it against the Mets on Oct. 2, 1972. Stoneman achieved the team's first no-hitter, also against the Mets, in 1969.

New York City will close the fiscal year with a $243 million surplus, its first since the early 1960's and almost twice the previously projected figure, the city's budget director said yesterday. The surplus is due primarily to an unexpected increase in city tax revenue, according to James R. Brigham Jr., the director of the Office of Management and Budget. He said the surplus would be used to insure a balanced city budget in the next fiscal year in the face of the budget cuts being sought by the Reagan Administration. Just how the surplus will be used will not be known until tomorrow when the city's budget for the coming fiscal year, starting July 1, is released. Until now, Mayor Koch's adminstration has been reluctant to be specific about the size of the surplus, fearing that demands for increased city service would ensue.