There's over 100 people retiring per year with 30+ years at my airline so I'm not sure what you mean by that. It's pretty common at many legacy carriers worldwide. Or did you mean only expat contract pilots?
What is the history of Air Japan's foreign contractors? Has it been working this way since they started 17 years ago? When JAL kicked all the foreigners out what was the reasoning and could something similar happen at this company? ie They have enough locals to staff all positions.