My company has organised a team-building day at the beach, which will doubtless involve juvenile games and running around giggling. As a senior member of staff, I feel I’m within my rights to refuse to attend as I can’t afford to waste a work day. I asked my boss if I could be excused, but he says it is compulsory. I don’t want to play silly games and am seriously considering calling in sick. Are these things really compulsory?