Hong Kong is the world’s most expensive city for expatriates in Mercer’s 2020 cost-of-living survey, a reminder that the price of sending workers abroad is still driven by housing, currency moves and pandemic-era disruptions more than by headline inflation alone.
Hong Kong Tops Mercer 2020 Expat Cost Rankings

The survey, which covers 209 cities and prices more than 200 everyday items, matters because multinational employers use it to set compensation packages and hardship allowances. When a location climbs the cost table, the expense is not just felt by expats at the checkout counter — it feeds directly into corporate payrolls, project budgets and ultimately where companies choose to place talent.

Mercer said inflation and currency volatility continue to swing the cost of overseas assignments higher or lower. That is especially important for firms with large international workforces, because a stronger local currency can make a city suddenly far more expensive even if domestic prices appear stable in local terms. For investors, that can mean tighter margins for employers with heavy overseas staffing needs and a bigger bill for companies expanding in high-cost financial hubs.
The 2020 ranking also arrived as border closings, flight interruptions and mandatory quarantines distorted the practical cost of living for assignees. Ilya Bonic, Mercer’s strategy chief, said those disruptions affected not only prices but also the quality of life for workers abroad. In other words, the cost equation is no longer just about rent and restaurant bills — it now includes the operational friction of moving people across borders in a pandemic.
For long-term investors, the key takeaway is that expensive global cities remain expensive for a reason: they combine scarce housing, sticky service costs and currency risk. That tends to favor employers with strong pricing power and deep balance sheets, while pressuring businesses that rely on mobile labor but have limited ability to absorb higher compensation costs. If your portfolio includes multinational employers, real estate operators or companies dependent on expat-heavy staffing, this is worth watching.
| Entity | Gains | Losses |
|---|---|---|
| Multinational employers with pricing power | ▲Can pass on costs | ▼Still face higher payroll bills |
| Expats in top-tier cities | ▲Better compensation packages | ▼Lower purchasing power |
| Low-margin global firms | ▲Little | ▼Rising assignment and relocation costs |
| Mercer clients and HR teams | ▲Cost benchmarks | ▼Bigger budgets to manage |


