Yesterday I discovered the interesting French word pantoufler /pɑ̃.tu.fle/, which, according to Reverso means to “switch from civil service to the private sector (French elite jargon, usually to make more money)”.
According to Wikpedia the related word pantouflage refers to high-level French civil servants, usually former students of the École Polytechnique or the École nationale d’administration, going to work in private enterprise. It also applies to politicians doing the same thing. Someone who engages in pantouflage at known as a pantouflard, which is also translated as stay-at-home.
The word pantoufler come from pantoufle (slipper), which combines pan (a piece of cloth) with the suffix -oufle, which denotes mbloated objects and muffled sounds. A pantoufle was originally a cloth shoe [source].
Apparently the term revolving door is used for this practice in the USA.
In Japan this practice is known as 天下り [amakudari] (“descent from paradise or the sky”).
Are there similar expressions and practices in other languages?