Okay, terrible confession time – I was an illegal human being for about ten days a few months ago. I had no idea and luckily I didn’t get stopped by any cops or anything.
I went to immigration to upgrade to the new foreigner card and the lady behind the counter’s eyes grew huge and she said, “You’ve overstayed!” and frantically whipped out a bunch of paperwork I had to do and return as soon as possible.
I spent the afternoon gathering the stuff I had to from the city and ward offices. I then filled out all of the necessary paperwork (they give you a temporary extension and then a new visa usually at the same time, so you have to fill out both documents).