Key Research Findings:

When Rework Is Desirable

Sometimes more rework makes a project faster!

  • Moving an activity upstream in a process, in defiance of its predecessors (artificial overlapping)...

    • Increases the risk of rework (adds feedback marks in the DSM)

    • But, can let workers “get their feet wet,” which may be worth the time savings in cases of:

      • Substantial set-up times

      • Significant improvement (learning) curves (IC)

      • Low sensitivity to input changes (low rework impact)

      • Low second-order rework generation

      • No resource constraints

  • Tradeoff: time (duration on the critical path) for cost

  • Situations must be evaluated at the project level in terms of the overall network.


Key Publication: P8