We have an employee who recently reduced hours and chose to have a whole day off during the week -Tuesdays (working week is Mon-Fri). Before approving this, we agreed they would work on Tuesdays as and when required for project delivery so not 100% set in stone. Since they started this pattern we happened to organise team events with external facilitators and 2 of these events were held on Tuesdays. Whilst not critical that they attend, it would be important for their development, their understanding of company culture as well as team morale and really showing that are willing to integrate. We cannot always choose days to suit them. They declined to attend on both occasions and wondered what would be reasonable to expect? I know I would attend and take the day off another time that week?