I think this should not be over-read. I believe that that's a form of sarcasm / ironical phrase, meaning _few minor incidents plus some planned retirements_ . As of he's implying that the employees tend to get overworried/annoyed easily for any minor incident.

Sorry I don't speak English natively (and to make things worst, I'm Italian!!) and I'm not sure I was able to express my thoughts in a comprehensible way! Please feel free to rephrase if you can do it better then me! Thanks! ¯\_(ツ)_/¯