In the world, Canada is the first country which adopted multiculturalism as an official policy in 1971 to emphasize that all Canadian citizens are equal regardless of their color, racial and ethnic backgrounds. This paper will examine how multicultural society was functioning, what ambivalences an immigrant had to face at the beginning of the twentieth century from the eyes of a Jewish -Canadian writer, Mordecai Richler, whose masterpiece, The Apprenticeship of Duddy Kravitz, will demonstrate the ambiguities and contradictions of Jewish immigrant existence.