Communist Albania's main opposition party released its platform Saturday for the March 31 parliamentary elections, promising private enterprise, land reform and a shorter work week.

The Democratic Party program, published in its newspaper Democratic Revival, was more reform-oriented than that of the ruling Albanian Labor Party, formerly the Com-munists.The elections will be the first multiparty ballot since the 1944 Communist takeover of the Balkan nation, which is now shedding its isolationist and hard-line Stalinist policies.

Since the Democratic Party was founded Dec. 12, at least three other opposition groups have been legalized.

Opposition leaders said Saturday that postal authorities had not delivered the 40,000 subscription copies of the semi-weekly paper, which has a circulation of about 50,000.

Ben Ruka, a journalist at the paper, said the Democratic Party had paid for the mailings and described the failure to deliver the paper as "political sabotage."

The Democratic Party has relied largely on word of mouth and rallies to make its program known. An opposition rally is planned for Sunday in the central city of Burrel.

The party's program - the main points of which were translated for a reporter by a party member - pledged to reduce the six-day, 48-hour work week to five days and 40 hours.

It calls for state housing, kiosks, shops, restaurants, bars and hotels to be privatized first. Larger enterprises would be divided into shares, which would be distributed to all Albanian adults who would then be able to trade them, it said.

The program also promises to distribute land free to the peasants who work it, and stresses the right to private property and inheritance.