After a futile 5 month wait for a promised letter of recommendation, following 14 months of service as a re-signed and highly-rated CDI instructor, I've decided it's time to share my experience with CDI Jeju in order to inform others of the potential nightmare. Basically, it's a great school with a solid curriculum, mostly wonderful students, and plenty of resources for teachers. However, the owner, as well as the head instructor are ridiculously demanding and unfair. As a teacher you can expect to have all of your classes monitored via video, be critiqued, judged, and have your job threatened repeatedly without concrete justifications. Encouragement does not exist and you will not receive a smile or welcome from the bosses. Although you may be asked to lie or participate in other unethical business practices as they attempt to manipulate their own corporate system of legality. There are way too many unpaid training sessions and no holidays/very little vacation. While Jeju is fantastic and at CDI the money is slightly better than elsewhere on the island, it's not worth the stress of working for such miserable people.