Viren is a shareholder in a transport sector family company (with his brother and sons?). I think he is almost fully retired by now even when in a documentary a few years ago, he worked still part-time.
Rolf Haikkola is alive and turns 95 in a few months. He has been in relatively good health, and he has been even interviewed a few times in the last five years-or-so.
The members of Viren's physiological team (overtraining testing, regular medicine) are also unsurprisingly very old, and some have since deceased, most famously famed doctor Pekka Peltokallio of the Finnish Athletics Federation in 2017.