In each of the companies I've worked at, one of the simplest standards also seems to be one of the most poorly implemented - date format. ISO 8601 was introduced back in the 1980's to set a global standard numeric format for dates (YYYY-MM-DD), among other things. All fine and dandy until you get a group of people together working in one company that had various formats drilled into their heads at an early age (MM-DD-YYYY, YY-DD-MM, DD-MMM-YY, etc.), that seemed to originate from their location in the world. Every single one of these people held a strong conviction that their method was the only correct one, and anyone who didn't agree was only creating problems for themselves. The number of variations is mind-blowing; toss in the date formats that may be enforced by some purchased software packages (our ERP date format is TRULY bizarre, but I can't change it), and it can be a show-stopper depending on the situation. It's hopefully plain to see that for dates in the first twelve days of any month, confusion sets in - no one can reliably tell what the date actually is. Does that "09" mean the 9th, or September? When I try to enforce a standard through meetings, preventive actions or other means and I'm typically met with "Don't you have anything more important to do?" Terrible attitude, but.... How do you handle this annoying issue in your workplace?