On improvement approaches

5 important questions on On improvement approaches

What are general descriptions of the improvement approaches?

  • TQM and lean: general management practice or philosophy
  • Six Sigma: meta-routine for improving processes
  • BPR: a fundamental rethinking and redesign of operating processes and organizational structure

What are the focuses and the kind of changes of the improvement approaches?

  • lean, TQM and Six SIgma: focus on incremental, continous improvement
  • BPR: radical change approach

  • TQM, BPR and lean: both anticipatory and reactive (BPR bit more reactive)
  • Six sigma: hard to say


  • All: planned change approach

What to change with the improvement approaches?

  • TQM: quality (but many definitions on quality)
  • Lean: minimum costs, no waste
  • BPR: reduce costs and lead times, focus on processes
  • Six SIgma: reduce variation (focus on how to change)

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Diagnosing external environmental change conditions with the improvement approaches?

  • TQM: not explicity paid attention to (however it is contingency factor)
  • BPR: often initiated by strong economic and technical factors
  • Six Sigma: only reflected in taking into account customer requirements
  • Lean: depends on UoA; lean implementation should fit with stability of demand and production environment

Diagnosing the scope change context with the improvement approaches?

  • TQM: no pre-determines
  • BPR: naturally very large
  • Six Sigma: problem/project definition important
  • Lean: focus on cultural and operational problems

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