[1] Lajovic was born in Ljubljana, Slovenia (then part of the Kingdom of Serbs, Croats and Slovenes) and studied business and accountancy at the State Commercial Academy.

He left Slovenia in 1945 when communist Josip Broz Tito took power, moving first to Italy and then Australia, where he arrived in 1950 at the age of 30.

[2][1] Lajovic went to the Bonegilla Migrant Reception and Training Centre and then to Holbrook, New South Wales, where he worked in a bottling factory.

He supported migration and was concerned with the working conditions and social isolation experienced by migrants, but was hostile to the idea of multiculturalism, viewing it as divisive.

In 1981, he was one of several people named in a dossier tabled in parliament as "war criminals"; when The Daily Telegraph repeated the allegation, he sued them for defamation, resulting in a settlement from the newspaper.