 Large spectroscopic radial velocity monitoring campaigns have revealed the presence of high-velocity outflows or jets from post-AGB stars.The origin of these jets is the presence of a binary companion, where mass-transfer and accretion onto one of the stars leads to the creation of an accretion disk, from which matter is ejected.The presence of a magnetic field causes the eventual ejection and collimation of the matter, forming a bipolar outflow or jet.