The influential Federal Executive Institute Alumni Association says a majority of its members, who make up a Who's Who of current and former U.S. officials, oppose changing the Hatch Act to allow 3 million civil servants to get involved in partisan politics.

Association President John O. Rittenhouse says that removing the political insulation Congress put on the federal service in 1939 could wreck the career service and produce a rash of conflict-of-interest cases.

The association represents graduates of the Charlottesville-based institute, the mid-career civilian equivalent of West Point or Annapolis. It's where employees tapped for greater things go for training and to get to know fellow federal workers who will someday run daily operations of the bureauracy.

The House last year easily passed a bill by Rep. William Clay (D-Mo.) to revamp the Hatch Act, which has kept career workers out of active campaign roles and protected them from pressure by political appointees. The Senate will take up the bill next month.

Revising the act, Rittenhouse says, "would adversely affect the efficiency and morale of the civil service" and public confidence in programs. In a letter to Sen. John Glenn (D-Ohio), chairman of the Governmental Affairs Committee, Rittenhouse said, "In spite of the best intentions the {Hatch Act revision} bill would encourage the very type of abuses that led to the passage of rules to insulate career employees from political pressures." It could, he said, "easily spell the end of the professional civil service and the reentry of the political spoils system."

Clay's Hatch Act revision plan would let career workers take roles in political campaigns off duty and allow political appointees to engage in political activity if costs associated with it weren't charged to taxpayers or federal contractors.

Rittenhouse said 62 percent of the association's members answered a survey on proposed legislative changes, and six of 10 opposed the Hatch Act changes while an additional 27 percent said it was not a burning issue.

Federal and postal unions, the prime movers behind Hatch Act revision, say that many civil servants are eager to get active in politics. They say it is unwise and unfair to deprive millions of the nation's best and brightest of political rights because of the color of their paychecks. Most congressional Democrats favor Hatch Act reform. Republicans, once solidly against changes, are about evenly divided.People

Willie Blacklow is the new press secretary to Sen. Carl Levin (D-Mich.), a key member of the Governmental Affairs Committee. He previously handled press chores for Reps. George Miller (D-Calif.) and Toby Moffett (D-Conn.), and succeeds Philip Shandler, Levin's press chief since 1985. Shandler plans to do consulting work.

John T. Haas has retired from Agriculture's Cooperative Service after 32 years with Uncle Sam.Job Fair

The Metropolitan Federal Network is sponsoring a federal job fair at the Labor Department from 9 a.m. to 7 p.m. Friday and from 9 a.m. to 3 p.m. Saturday. Job openings range from Grades 2 through 12, but most are for clerk-typists, stenos and secretaries. Job hunters should bring copies of Form 171 and Form 50. For details call Beebe Belmore at 759-2999.