The Advertising Standards Authority has banned a radio ad from recruitment company Reed Online for implying that all Germans are tyrannical.
The campaign featured a man speaking to his boss, who responded in German in loud, staccato bursts evocative of the speeches of Adolf Hitler.
The less than subtle ad ended with a voiceover declaring: "Boss a bit of a tyrant? Find your perfect boss on the UK's biggest job site."
The advertising watchdog received 13 complaints that the ad was offensive because it used an outdated stereotype and implied that all Germans were tyrants.
The ASA said that stereotypes were inevitable in a short radio ad, but that these should not perpetuate damaging misconceptions.