The present invention is related to an agricultural baler for producing rectangular bales, provided with a baling chamber (1) and reciprocating plunger (4), configured to move back and forth in the baling chamber (1), thereby compressing crop material and forming rectangular bales. The baler is further equipped with a stuffing mechanism (20, 20) for stuffing pre-compressed crops from a pre-compression chamber (2, 2) into the baling chamber (1), the stuffing action of said mechanism (20, 20) being synchronized with the plunger action, a bale length control system for producing bales of substantially equal length, and a bale-eject system (10, 11, 12, 13, 14) for evacuating the last bales from the chamber (1) at the end of a harvesting run. The baler of the invention is further equipped with a means (25, 30) for activating said stuffer mechanism (20, 20) automatically when the bale eject system (10, 11, 12, 13, 14) is set in motion, thereby actuating at least one cycle of the plunger action. In this way, the evacuation of the bales from the chamber (1) is initiated by said plunger action cycle, facilitating the further transport of the bales by the bale eject system (10, 11, 12, 13, 14).
