彼は来月、本社の部長に栄転することになった。
Next month he is being transferred to head office on promotion to department manager.
ご栄転おめでとうございます。
Congratulations on your promotion and new post.
課長の栄転を祝って、送別会が開かれた。
A farewell party was held to celebrate the section chief's promotion to a new post.