Hi Bluegold , you don't need to work for Air Mauritius to get a VALIDATION of your licence in Mauritius but must be expected to fly in mauritian airspace of course, either on a private or commercial basis. As Mauritius doesn't have a pilot licence as such they validate ICAO licences.
All you need is copy of your licence & endorsements plus copy of valid medical & proof of nationality. i.e copy of relevant passport.
I think that's about it , contact :
Flight Licensing Dept
Dept of Civil Aviation
SSR International Airport
I'm not sure about the phone number, maybe one of the local guys on this website can check it up in the phone directory.
P.s : just in case, send a photo of your ugly mug !...