I have the same problem with Merlin ,as we don't get a lot of company. I find that if you explain to the guys that you want to "socialise' Maxif they don't minf you just letting him see what is going on. Most are good about it, just explain that they should say hi from there work and not move toward the two of you. Keep him on a leash and be very soothing and just let him see what is going on.
It's like you know the kids are doing something but you still have to make sure they arn't doing something wrong. Thats how he feels. After about 5 mintues he should be a little more consoled. It works for Merlin ,I take him then for a walk around the yard he then realizes it's ok.
Hope it works if you choose to to it.