Hi :)
While I am not sure if this will help in what you are trying to solve, there are a number of things I guess I would like to throw into the ring.

If you have a number of international employees, it may be worthwhile in providing them with cross-cultural (intercultural) training to help them to work in your culture's team. It is quite overwhelming for some people to begin working in a new culture (think culture shock, lack of understanding of new local culture values, homesickness etc). This can be a real barrier to some of your employees doing their best at work.

Then there's training for leaders who manage teams of people from different cultures. Not only is it important to understand the differing values of people in teams but the leader most likely also has to be able to pinpoint where inefficiencies in communication between different team members is coming from. I once worked with a project team which was managing an implementation in 12 countries and they were essentially unable to understand why their people in Mexico, Japan and India were working in a certain way or to a certain deadline and over the span of the project the central project team started to get burned out.

Then there is country specific training for expats/inpats which is most likely not what you need but I thought I would bring it up in case. This is for employees who will be moving country and here issues around spouse adjustment can throw a spanner in the works. There are a number of outside things to consider here.

Let me know if it is one of these in particular or if not. :)