There are indeed strategic and tactical issues that must be addressed in any world-class global mobility program. Compliance and risk minimization are long-time program targets, both of which have initiatives that are consistently reviewed and revamped depending on the needs of the business and events occurring in the world. Programs must consider the impacts of various volatile events as they manage the risks within their program. From terrorism to nationalism, to economic and currency rate volatility to climate catastrophes...there is no shortage of volatile events happening day-to-day all over the world.
Recent updates from ECA on their cost of living survey led them to state that, "Uncertainty is affecting many large markets and volatility is here to stay". If you have a global mobility program with activity in Japan, Venezuela, Brazil, Turkey, Egypt, China and the eurozone, then you should review the latest information and consider the impact on your program.
A number of currencies have moved significantly since the March 2017 Cost of Living Survey was published, which will have a significant impact on future indices for those locations. The biggest change of all was seen in Venezuela which devalued the DICOM exchange rate massively. A US dollar will now buy over 2000 bolivars - compared to only VEF 863.8 during the survey. This rate is still far short of the black-market exchange rate whereby one US dollar will buy you over 7000 bolivars, and this is rising!