We’ve just been to Indonesia. In Jakarta we conducted training for both native English and Indonesian speakers. In Bandung I went to a conference conducted in English, despite most of the 600 attendees being Indonesian vocational teachers. They need to speak and write in English, which will be the language of the ASEAN community when it comes into effect at the end of 2015.
As English becomes a lingua franca, it’s going to be worth taking the time in workplaces around the globe to consider how everyone uses the language. You might even want to check out this idea of conducting a tutorial on English as a lingua franca (yes, it’s got an acronym, ELF), developed a few years ago by a team attached to York St John University in England.