On a multi-project staffing problem with heterogeneously skilled workers

  • Matthias Walter
  • Jürgen Zimmermann
Conference paper
Part of the Operations Research Proceedings book series (ORP)


We examine a workforce assignment problem arising in the multi-project environment of companies. For a given set of workers and for a given set of projects, we want to find one team of workers for each project that is able to satisfy the project workload during each period of project execution. The aim is to minimize average team size. We outline two mixed integer linear programming (MIP) formulations and introduce two heuristic approaches to this problem. A numerical study indicates the performance of the approaches and provides managerial insights into flexibility issues.


Mixed Integer Linear Programming Roulette Wheel Selection Mixed Integer Linear Programming Model Mixed Integer Linear Programming Formulation Warehouse Location 
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  1. 1.
    Drexl, A.: Scheduling of project networks by job assignment. Management Science, 37(12), 1590–1602 (1991)CrossRefGoogle Scholar
  2. 2.
    Feldman, E., Lehrer, F. A., Ray, T. L.: Warehouse location under continuous economies of scale. Management Science, 12(9), 670–684 (1966)CrossRefGoogle Scholar
  3. 3.
    Gutjahr, W. J., Katzensteiner, S., Reiter, P., Stummer, C., Denk, M.: Competence-driven project portfolio selection, scheduling and staff assignment. Central European Journal of Operations Research, 16(3), 281–306 (2008)CrossRefGoogle Scholar
  4. 4.
    Hammer, M., Champy, J.: Reengineering the corporation. HarperCollins, New York (1993)Google Scholar
  5. 5.
    Heimerl, C., Kolisch, R.: Scheduling and staffing multiple projects with a multi-skilled workforce. OR Spectrum, 32(2), 369–394 (2010)CrossRefGoogle Scholar
  6. 6.
    Hendriks, M. H. A., Voeten, B., Kroep, L.: Human resource allocation in a multi-project R&D environment. International Journal of Project Management, 17(3), 181–188 (1999)CrossRefGoogle Scholar
  7. 7.
    Karau, S. J., Williams, K. D.: Social loafing: A meta-analytic review and theoretical integration. Journal of Personality and Social Psychology, 65(4), 681–706 (1993)CrossRefGoogle Scholar
  8. 8.
    Walter, M., Zimmermann, J.: A heuristic approach to project staffing. Electronic Notes in Discrete Mathematics, 36, 775–782 (2010)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Department for Operations ResearchClausthal University of TechnologyClausthal-ZellerfeldGermany

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