"We don't need to go to that extent and be the fun the police," he said.
"There are just certain ways of managing things."
He did, however, warn of the onus on employers to make sure their staff are safe when the December festivities kick into gear.
"It's not like the old days when you just got on the lash and sent everybody stumbling off into the night. Employers' obligations really go beyond that now."
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He said it's about making sure there are rules and place, alternatives to alcohol and transportation to help people get home if the event is off-site.
McDonald added that he thought the chaperones at BDO were perhaps a step too far.
"It's not a bad idea to have people around that are reasonably responsible, but your own employees or boss can do that. It's more about just being aware and if someone is a little bit worse for wear, it's about helping them out."