The date marks the 22nd anniversary of the International Convention on the Protection of the Rights of All Migrant Workers and Members of Their Families, adopted by the UN General Assembly in 1990.

BBC: Members' business: Migrants' rights day

Here in Europe, ratification of the Convention on the Rights of Migrant Workers and their Families has been disappointing.

UN: Secretary-General

Every year, millions of China's 250 million migrant workers leave their factories and travel across the country to visit their families at home.

WSJ: Companies Seek to Avoid China New Year Hangover