Production planning under hierarchical workforce environment

Sujan Piya*, Nasr Al-Hinai

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In a make-to-order system, orders are scheduled for production based on the agreed due date with customer and the strategy of company. Production planning of such system includes scheduling of orders to the production periods and allocation of workers at different work centers. Complexity in the system arises when the operation to perform next and its processing time is skilled dependent where a higher qualified worker type can substitute a lower qualified one, but not viceversa. Under such working environment, efficient scheduling of orders and allocation of workers at different work center play a major role to improve system performance. This paper develops a mathematical model for make-to-order flow shop system that helps to identify optimum schedule of orders and allocation of workers, under hierarchical workforce environment, with an objective of minimizing the weighted average earliness and tardiness of orders. A heuristic method is also proposed to reduce the complexity and solve the model efficiently.

Original languageEnglish
Title of host publicationWorld Congress on Engineering, WCE 2014
PublisherNewswood Limited
Number of pages5
ISBN (Print)9789881925350
Publication statusPublished - 2014
EventWorld Congress on Engineering, WCE 2014 - London, United Kingdom
Duration: Jul 2 2014Jul 4 2014

Publication series

NameLecture Notes in Engineering and Computer Science
ISSN (Print)2078-0958


OtherWorld Congress on Engineering, WCE 2014
Country/TerritoryUnited Kingdom


  • Flow shop
  • Hierarchical workforce
  • Make-to-Order
  • Scheduling
  • Worker allocation

ASJC Scopus subject areas

  • Computer Science (miscellaneous)


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