Some students, especially if they need English for work, may have had some experience working in another country or even have some colleagues who are working abroad. This topic is good since working abroad becomes more and more relevant in this day and age. A few good questions include:
Have you ever worked in another country?
What difficulties can working abroad have?
If you could choose, where would you like to work abroad?
What work experience have you had with colleagues from abroad?
What are some cultural differences between your country and foreign countries your company does business with?