In this paper we propose to analyse the spatial behaviours of cross-border workers who are crossing daily the border between France and Luxembourg (mobility beam: Thionville-Luxembourg). We suppose that the border influences the planning and the activity spaces of cross-border workers and contributes to form specifics routines and spatiotemporal behaviours. These particularities are highlighted by the comparison of spatial behaviours of cross-border workers to those of actives who commute on another comparable mobility beam without national border: Voiron-Grenoble. The analyses are based on quantitative mobility surveys of the CERTU. Results reveal a differential border effect on the location and duration of activities of cross-border workers: consumption, leisure, visiting. Cross-border workers have an important residential base because they spend more time close to their place of residence. On the contrary, the other workers choose the proximity of the work place to perform their daily activities.