A printing system includes a registration portion configured to, when a print job to print an image onto a sheet of paper is executed after specified conditions are modified, store attribute data containing a user identifier and a job identifier into a storage portion, the user identifier being for identifying a user who has given a command to execute the print job, the job identifier being for identifying the print job; a determining portion configured to, when the user identifier is entered, determine whether or not the print job corresponding to the job identifier of the attribute data containing the user identifier can be executed in accordance with the conditions; and a re-execution portion configured to, when the determining portion determines that the print job can be executed in accordance with the conditions, execute the print job once again.