“Holy days” or “holidays” of obligation (Letters, 14 June) were, in medieval Christendom, certain major liturgical feast days when the employer, under church law, was obliged to give his workers the day off to attend Mass and to celebrate the feast with drama, dancing and with joy. The stress was on the word “holiday”; the obligation lay with the employer, be he yeoman or lord of the manor. Ironically, when the act for the abrogation of certain holidays was p