A demotion or transfer to a lower-ranking post, often as a punitive or disciplinary personnel move.
不祥事が発覚して彼は営業部から地方支店への左遷を言い渡された。
When his misconduct was exposed, he was told he would be demoted and transferred from sales to a regional branch.
会社の人事異動で左遷と受け取られる配置転換があった。
There was a personnel transfer at the company that was regarded as a demotion.
左遷という言葉には『不利益な移動』というニュアンスが強い。
The word 'sasen' carries a strong nuance of an unfavorable transfer.