There has been a significant history of Chinese immigration to Canada, with the first settlement of Chinese people in Canada being in the 1780s. The major periods of Chinese immigration would take place from 1858 to 1923 and 1947 to the present day, reflecting changes in the Canadian government's immigration policy. Chinese immigrants were originally considered an expendable source of cheap labour due to their economic depression and acceptance of death from Canadian employers. Between 1880 and 1885, the primary work for Chinese labourers in Canada was on the Canadian Pacific Railway (CPR).