In a move designed to prevent U.S. withdrawal the International Labor Organization has pointed to a legal escape hatch that could extend by a year the Nov. 5 deadline for American pullout fron the United Nations agency.

But State Department officials suggested yesterday that the ILO move was of little significance since the agency's response to U.S. objections ob ILO policy have been "negative" thus far.

The Ford administration served notice on the ILO two years ago that it would pull out unless the 135-nation agency stopped taking grossly political positions favorable to Communist and Third World countries, including the 1975 expulsion of Israel.

The agency has also condemned human-rights violations in countries controlled by righties regimes without applying the same standards to Communist and the Third World countries.

The Carter Administration has been under considerable pressure from Western countries to reverse the pull-out decision. The United States pays one-fourth of the ILO's $169 million annual budget. Perhaps more important is the matter of precedent, since this would be the first time the United States has quit a U.N. agency.

The new ILO announcement that the wording of its charter "does leave room for extension of the notice" of withdrawal for one year was apparently designed to give Washington time to reconsider.

A Cabinet-level committee including Secretary of State Cyrus Vance National Security adviser Zbigniew Brzenzinski. Labor Secretary Ray MArshall, AFL-CIO President George Meany and former Chamber of Commerce president Charles Smith met here two weeks ago to make a final recommendation.