Nigeria has the highest number of high-earning expats. A total of 12 per cent of households earn more than $250,000 per year, making it the top location for earnings, according to InterNations, a network for people who live and work abroad.

Russia and Kazakhstan fall in joint second place for earnings – 11 per cent of expat households fall into the $250,000-plus bracket. The global share of expatriates making that amount per year or more is just three per cent.

Nigeria is also home to the world’s longest expat working week, at 48.2 hours on average. Ghana follows with 47.8 hours. The global average working week for expats is 41 hours.

But foreigners don’t seem to mind the hard work. More than half of the InterNations survey respondents in Nigeria, Ghana, Senegal and Kenya rated their working hours and work-life balance positively.