The Chinese Labour Corps (CLC; French: Corps de Travailleurs Chinois) was a force of workers recruited by the British government in World War I to free troops for front line duty by performing support work and manual labour. The French government also recruited a significant number of Chinese labourers, and although those labourers working for the French were recruited separately and not part of the CLC, they are often considered to be so. In all, some 140,000 men served for both British and French forces before the war ended and most of the men were repatriated to China between 1918 and 1920.
In 1916, Field Marshal Sir Douglas Haig requested that 21,000 labourers be recruited to fill the manpower shortage caused by casualties during World War I. Recruiting labourers from other countries was not something unusual at that time. Other than the Chinese, there were Labour Corps serving in France from Egypt, Fiji, India, Malta, Mauritius, Seychelles, the British West Indies as well as a Native Labour Corps from South Africa. It was estimated that at the end of the war over 300,000 workers from the Colonies, 100,000 Egyptians, 21,000 Indians and 20,000 native South Africans working throughout France and the Middle East by 1918.
As China was initially not a belligerent nation, her nationals were not allowed by their government to participate in the fighting. As a result, the early stage of the recruiting business in China was somewhat sketchy, with semi-official support from local authorities. However, after China declared war against Germany and Austria–Hungary, on 14 August 1917, the Labour Department of the Chinese government began organizing the recruitment officially.