A method for dividing print jobs in an output tray of a printing machine includes outputting print job sheets of a print job onto an inclined support of the output tray, so that the print job sheets slide against an abutment to form a stack. A dividing sheet is produced, and a hook-shaped deformation is imparted in the dividing sheet. The dividing sheet is outputted onto the stack formed by the print job sheets on the output tray so that the dividing sheet slides in the direction of the abutment and the deformation becomes propped up against the stack.