Letters (Wattys 2015)

Each employee drudged slowly into work that morning. All with a different lingering worry on their minds. As they entered the building a new bulletin board catches their eye. All that's on the board are a series of lines. No words. No numbers. No information. They all thought that was odd, but decided not to question it.
As they all sat down at their desks, pushing their worries aside, they open up their daily letters with new company updates. Only today, a new series of numbers, letters, and words confuses them all.