Planning annualised hours with a finite set of weekly working hours and cross-trained workers.
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Annualising working hours (i.e., the possibility of irregularly distributing the total number of working hours over a year) permits companies to adapt capacity to fluctuations in demand, thus reducing overtime, temporary workers and inventory costs. Since annual hours can lead to a worsening of the staff’s working conditions, many laws and collective bargaining agreements contain constraints that affect the distribution of working time. This paper proposes a MILP model to solve an annualised working hours planning problem in which workers are considered to be cross-trained, and in which the number of weekly working hours must belong to a previously agreed finite set. A computational experiment demonstrates the effectiveness of the model.
CitationCorominas, A.; Lusa, A.; Pastor, R. "Planning annualised hours with a finite set of weekly working hours and cross-trained workers". European Journal of Operational Research, 2007, Vol. 176, No. 1, p. 230-239.