This small business owner gave their newly-promoted manager a choice of a demotion or termination after the manager failed to report for a shift that they were supposed to be running. The manager's failure to notify of their absence and subsequent lack of communication meant that the business was not opened on time and remained closed until after the owner was notified three hours later. This thread was posted to Reddit's r/AITA (Am I the A**hole) subreddit by Reddit user and business owner, u/…