It maybe a rare exception, but where I work it's almost the exact opposite. The older guys are always on the phone, or getting coffee, or smoking, or just yakking with each other. They won't do anything unless it will get them OT. Also, most of them seem very pre-occupied with the going pay rates at other jobs.
Like I said it might be an exception to the rule.
Sounds union. Very rare in high tech for there to be OT.