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The purpose of this paper is to illustrate the working of the PACT calculation model, a tool to determine office space dimensions. New ways of working (NWoW) seem to have become a fixed value in facility management (FM) practice in The Netherlands today. Stimulated by new technological possibilities, companies are rethinking their office environments to make workplaces more flexible and their use “activity related”. However, this requires a different approach to quantify the needed space and determine the types of workplaces to fit organizations’ processes. The PLaces and ACTivities (PACT) calculation model allows (facility) managers to gain an insight in the number and type of spaces needed, modulated by different scenarios and fitting to the organization and its work processes.

This article mainly aims to present the PACT model: an office space calculation tool. A case study is presented and calculated to compare an actual work environment of an organization to the PACT calculated results. As input for the model, data were used that were available before the work environment changes in 2007. Additionally, one scenario of a different workplace use is calculated which helped to visualize the accuracy and validity of the model.

When comparing the post hoc PACT calculated space to the real-life work environment, the number of calculated workplaces and the ratio to the number of employees do not seem to differ strongly. However, substantially less meeting space is calculated by the model, and some elements might require more testing to verify it completely. The scenario calculation shows that the model output changes to adapt to a more flexible work process.

Even though calculation and simulation models for office space are available, the described model puts together many different elements to provide a more holistic calculation. Elements like, for instance, absence, activities and occupational choices are combined.

The aim of this research is to determine whether the type of office environment has an impact on satisfaction with the office environment and productivity support.

Three office types that are most common in The Netherlands were distinguished: individual and shared room offices, combi offices and flex offices. 11,799 respondents filled out a questionnaire measuring satisfaction with the work environment and its contribution to productivity.

Regression analysis was used to investigate whether these factors were influenced by office type. Results show that office type is a significant predictor. While in combi and flex offices people can choose to work at diverse workspaces, people evaluate productivity support, concentration and privacy less positive than people working in individual and shared room offices. In combi offices, but not in flex offices, people are more satisfied with communication than in individual and shared room offices.

Nevertheless, satisfaction with the organization explains the most variance with regard to satisfaction with the office environment and productivity support.

In The Netherlands, there are a lot of office buildings with a combi or flexible office concept. The large dataset on which the comparison is based, is a real plus for the research.