There has been some confusion about background check time validity so I wanted to clear it up.
The diploma on file with Korean Immigration is valid indefinitely.
The Background Check on file with Korean Immigration is valid indefinitely UNLESS you leave Korea for a period or 90 days or more.
In that case, you will need an updated background check.
If you have been in Korea for more than one year, they may request a Korean Background check.
Support this page and share this information with those that may find it helpful. Thank you