According to the life-cycle theory of consumption and saving, foreseeable retirement events should not reduce consumption. Whereas some consumption expenditures may fall when goods are self-produced (given higher leisure after retirement), this argument applies especially to housing consumption...

Based on the German Socio-economic Panel (SOEP), we show that household consumption drops and saving rises significantly within four years after a child moves out of a household. Per capita consumption of parents is approximately leveled up to that of childless peers after all children are gone....