The Labor Party (, modernized "Partidul Muncii", PM) was a minor left-wing political group in Romania. Based in the city of Iași, and founded by George Diamandy, in its inception it was a split from the National Liberal Party (PNL). The PM responded to the major social and political crisis sparked by World War I, with the southern regions of Romania having been invaded and occupied by Germany. It notably pushed for urgent land reform, universal suffrage, and labor rights, also wishing to replace the 1866 Constitution with a more democratic one, and advocating class collaboration. Through Diamandy, its roots were planted in the "generous youth" current of 19th-century reformism.