A system for managing the size of a print job to be processed in a print shop is provided. The print shop includes a plurality of autonomous cells and the job size management system includes a scheduling tool for generating a list including a plurality of jobs. A processor is used to (a) assign a job size related value to each one of the plurality of jobs so that the plurality of jobs are corresponded respectively with a set of job size related values, (b) use the set of job size related values to calculate a control limit, and (c) for each job size related value exceeding the control limit, splitting the job corresponding with the job size related value exceeding the control limit into n number of sub-jobs for processing at the plurality of autonomous cells.