The Communist Working Group (German: Kommunistische Arbeitsgemeinschaft, abbreviated KAG) was a political faction in Thuringia, Germany.
KAG was founded by the Landtag of Thuringia members Otto Geithner [de], Agnes Schmidt and Hans Schreyer [de], whom had constituted an ultra-left faction in the Communist Party of Germany (KPD).
[1][2] Geithner and Schreyer had been expelled from KPD, whilst Schmidt resigned from the party to join KAG.
[1][3] KAG fielded a list in the 30 January 1927 Landtag election, headed by Geithner, Schmidt and Schreyer.
[4][5] Following the KAG electoral debacle, Schreyer joined the Social Democratic Party of Germany (SPD) whilst Schmidt withdrew from politics.