My company lets you keep your password a bit longer, maybe 45 to 60 days. A message comes up a day or two before you need to change. Sometimes the required change happens while I'm on vacation and when I try to log on upon returning I have to make up a new password on the spot. Eeek, talk about pressure.
Then you can't use any of your previous 5 or so passwords. Thankfully the password can be entirely letters without being case sensitive. None of this Capital letter, undercase letter, number, and symbol nonsense.