Originally Posted by Babaloo
Having an expired permit couldn't definitely be an issue - or not.
There seems to be differing opinions about renewing expired permits (without paying fines), so I won't offer my opinion (because it's probably wrong)
One key is your immigration status. Are you here on an FMM or FM2/3?
If on an FM2/3, your concerns should be (somewhat) alleviated.
I am just here on a tourist visa.