The JET Programme website includes an After JET Guide with information about pension refunds, reverse culture shock, post-jet employment, further education, and an after JET checklist.
The 2022-2023 Oita JET Leavers' Guide can be viewed or downloaded as a PDF below. Also included is a downloadable PDF template labeled "Essential Information for Incoming JETs" that can be used to share information with your predecessor.
Essential Information for Incoming Jets Feb 19th 2013 Fillable Version.pdf