The opportunity of teleworking has impacted people travel habits, especially work-related trips. In most cases the existing transport demand models lack the consideration of teleworking. This thesis investigates the characteristics of teleworkers based on earlier studies about teleworking and is aiming to improve the understanding of those characteristics to determine the living and work locations of teleworkers. The result of this thesis is a simple approach of teleworking probability for trip generation in transport demand models. The method is then applied on a case study of Uppsala municipality. The main findings suggest that it is important to consider both ability and willingness to telework in transport demand models. One of the challenges in modelling teleworking, is to find data on the most basic factors that affect the probability. In addition, an important conclusion is that more knowledge is needed about the weight of each factor on the probability of telework.