Planning Annualised Hours with a Finite Set of Weekly Working Hours and Joint Holidays

Abstract

Annualising working hours (i.e., the possibility of irregularly distributing a 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.

Manpower Planning with Annualized Hours Flexibility: a Fuzzy Mathematical Programming Approach

“…Some of them are , , Corominas et al (2002Corominas et al ( , 2004Corominas et al ( , 2007aCorominas et al ( , 2007bCorominas et al ( , 2012, Hertz et al (2010), Van der Veen et al (2014), and Filho and Marcola (2001).…”

A three-stage approach for aircraft line maintenance personnel rostering using MIP, discrete event simulation and DEA

“…In so doing, the decision makers are provided with the effects of the variability of the decision-support criterion (Borgonovo & Peccati, 2011). Corominas, Lusa and Pastor (2004; formulate a mixed integer linear programming model to allocate the workforce, considering annualized hours. They use a number of scenarios to test the influence of the demand curves and working-week-type parameters.…”

A multistage scenario optimisation procedure to plan annualised working hours under demand uncertainty

“…Moreover, AH often implies the need to solve a complicated working-time planning problem. Several authors have dealt with different versions of the problem (e.g., Hung, 1999a, Hung, 1999b, Gonçalves and Marçola, 2001, Corominas et al, 2002, Corominas et al, 2004b, but most papers (e.g., Lynch, 1995, MacMeeking, 1995and Mazur, 1995 only discuss AH from a qualitative point of view.…”