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Personnel Tour Scheduling When Starting-Time Restrictions Are Present

Listed author(s):
  • Michael J. Brusco

    (Information and Management Sciences Department, College of Business, The Florida State University, Tallahassee, Florida 32306-1042)

  • Larry W. Jacobs

    (Operations Management and Information Systems Department, Northern Illinois University, DeKalb, Illinois 60115)

Registered author(s):

    This paper presents an effective solution strategy for an important category of personnel scheduling problems. Specifically, we address the restricted starting-time tour-scheduling problem (RSTP), which involves the determination of the hours of the day (shifts) and days of the week (days on) that employees are assigned to work. RSTP is characterized by restrictions on the number of daily time periods in which employees may begin their shifts. Moreover, the RSTP we consider contains constraints that require separation of starting times. Such restrictions are widely encountered in practice and are based on a number of factors including managerial concerns for control of employee movements, union contractual obligations, and employee preferences for common shift starting times. A two-stage heuristic solution strategy is proposed for RSTP. We developed eight heuristic procedures based on this strategy and applied them to four sets of labor requirements, for each of 27 United Airlines (UA) airport ground stations. One of the best of these procedures yielded solution costs that averaged only 1.36 full-time-equivalent employees above very conservative LP-based lower bounds. Moreover, the solution costs obtained using this procedure were, on average, 28 percent closer to the lower bounds than solution costs obtained using UA's current scheduling system. We conclude that the two-stage heuristic solution strategy is a valuable platform from which to develop procedures for generating near-optimal solutions to this difficult class of personnel scheduling problems.

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    File URL: http://dx.doi.org/10.1287/mnsc.44.4.534
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    Article provided by INFORMS in its journal Management Science.

    Volume (Year): 44 (1998)
    Issue (Month): 4 (April)
    Pages: 534-547

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    Handle: RePEc:inm:ormnsc:v:44:y:1998:i:4:p:534-547
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    1. Bechtold, Stephen E. & Brusco, Michael J., 1994. "Working set generation methods for labor tour scheduling," European Journal of Operational Research, Elsevier, vol. 74(3), pages 540-551, May.
    2. R. N. Burns & M. W. Carter, 1985. "Work Force Size and Single Shift Schedules with Variable Demands," Management Science, INFORMS, vol. 31(5), pages 599-607, May.
    3. Fred F. Easton & Donald F. Rossin, 1991. "Sufficient Working Subsets for the Tour Scheduling Problem," Management Science, INFORMS, vol. 37(11), pages 1441-1451, November.
    4. Lauer, J & Jacobs, LW & Brusco, MJ & Bechtold, SE, 1994. "An interactive, optimization-based decision support system for scheduling part-time, computer lab attendants," Omega, Elsevier, vol. 22(6), pages 613-626, November.
    5. James G. Morris & Michael J. Showalter, 1983. "Simple Approaches to Shift, Days-Off and Tour Scheduling Problems," Management Science, INFORMS, vol. 29(8), pages 942-950, August.
    6. Rudy Hung, 1994. "Multiple-Shift Workforce Scheduling Under the 3--4 Workweek with Different Weekday and Weekend Labor Requirements," Management Science, INFORMS, vol. 40(2), pages 280-284, February.
    7. Larry W. Jacobs & Michael J. Brusco, 1996. "Overlapping Start-Time Bands in Implicit Tour Scheduling," Management Science, INFORMS, vol. 42(9), pages 1247-1259, September.
    8. Ahmad I. Z. Jarrah & Jonathan F. Bard & Anura H. deSilva, 1994. "Solving Large-Scale Tour Scheduling Problems," Management Science, INFORMS, vol. 40(9), pages 1124-1144, September.
    9. Gary M. Thompson, 1995. "Improved Implicit Optimal Modeling of the Labor Shift Scheduling Problem," Management Science, INFORMS, vol. 41(4), pages 595-607, April.
    10. John J. Bartholdi, III & H. Donald Ratliff, 1978. "Unnetworks, with Applications to Idle Time Scheduling," Management Science, INFORMS, vol. 24(8), pages 850-858, April.
    11. Stephen E. Bechtold & Larry W. Jacobs, 1990. "Implicit Modeling of Flexible Break Assignments in Optimal Shift Scheduling," Management Science, INFORMS, vol. 36(11), pages 1339-1351, November.
    12. Brusco, Michael J. & Jacobs, Larry W., 1995. "Cost analysis of alternative formulations for personnel scheduling in continuously operating organizations," European Journal of Operational Research, Elsevier, vol. 86(2), pages 249-261, October.
    13. Kenneth R. Baker & Michael J. Magazine, 1977. "Workforce Scheduling with Cyclic Demands and Day-Off Constraints," Management Science, INFORMS, vol. 24(2), pages 161-167, October.
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