A Brooklyn officer of the International Longshoremen's Association was given a $1,000 fine and a conditional discharge Tuesday in a 1987 bribery case involving the sale of jobs on the waterfront.

Gregory Lagana, 59, was also sentenced to 200 hours of community service, according to a spokesman for the Brooklyn District Attorney's office. Mr. Lagana, a delegate of ILA Local 1814, pleaded guilty to commercial bribery Feb. 6.Mr. Lagana was caught up in an 18-month criminal probe conducted by the Waterfront Commission of New York Harbor, the New York State Organized Crime Task Force, the Kings County (Brooklyn) Organized Crime Task Force and the U.S. Department of Labor. Thirteen individuals, including five other members of the dockworkers union, were arrested as a result.

The investigation included the use of undercover agents and electronic surveillance at a social club known as John's Luncheonette, located near Brooklyn's Red Hook docks.

Mr. Lagana was indicted July 21, 1987, for accepting a bribe from Waterfront Commission under- cover agent Steven Mutone. Mr. Mutone had offered $800 in return for securing a job at a fish processing complex then under construction on the Brooklyn waterfront, according to the indictment. Mr. Lagana accepted a $400 down-payment on the bribe, the indictment charged.

The fish processing terminal - known as the Erie Basin Fishport - has since been closed for lack of business.

A series of related indictments charged other individuals with illegal gambling, loan sharking and drug selling close to the Red Hook docks. On Tuesday, a Waterfront Commission spokesman was unable to provide details on the disposition of those indictments.

Mr. Lagana and six other officers of Local 1814 were named last month as members of the Gambino Mafia family in a civil lawsuit brought by the federal government. The lawsuit charges that Local 1814 and five separate New York area ILA locals are under the influence of organized crime and seeks to have their leaders removed from union office.