I worked at a Golden Arches in Leeds when I was a student in the mid-1990s. The manager, an Iraqi sociopath, made the mistake of putting me on the drive-thru on Boxing Day (the busiest day of the year). Up until then I'd only worked in the kitchen. Apparently within 1hr of my shift starting there was a 2-mile long tailback on the road outside the restaurant, because I was so inept at using the headset. Needless to say I didn't get a Christmas bonus.