This is a hard question to answer because it varies by culture, and even by area. In France, having a pastis and wine at lunch is pretty normal. In Germany, workplace vending machines often stock beer. In my own job, journalism, long liquid lunches were pretty common up until after the 2001 crash. They still happen, and we are encouraged to take part when they do. I even had a contract once that stated part of my job was to socialise with clients.

Historically print journalists were reknowned for alcohol consumption. Here is an obituary of an old time journalist with some examples of the drinking culture at the time.

"A subeditor, Phil Bunton, once told how he arrived for work and said: “Can you excuse me, Vic? I’m drunk”. Without showing the least annoyance, Vic replied: “I’m sorry to hear that mate. Why don’t you go down the pub and, if you feel better, come back later”.

Here is another link about the last journalists in Fleet Street

""When I was at the People we'd have a conference at 11am till about noon. Then the editor would open his drinks cabinet - all Fleet Street editors had one.

"Then we'd take a taxi to the Savoy or Claridges for more drinks. We'd come back about 4pm, and then go out drinking again around 5pm."