I was recently looking into jobs in Hong Kong. Mostly at big banks like HSBC. You'll have to speak/write in Mandarin/Putonghua for most jobs. Some job descriptions just said that speaking the language would be beneficial.
Speaking German is also a must when you plan to work in Germany. Most job descriptions are only available in German and even the English ones usually say that excellent German and English communication skills are required (eg Deutsche Bank).
Same in Austria.
Even the international banks require you to speak both English and German. Additional languages (especially Eastern European ones) are a huge advantage.
The same is basically true for Switzerland. French might be an additional requirement for some positions.
If you are planning to work in the US and just want something for your CV, I'd say it doesn't really matter which language you learn.