some companies it's pretty causal
when on work placement at a small stock brokerage they had a quite laid back at attitude to NSFW stuff. every one would share there smut pretty openly (men and women) but we also had good email filters. IT had a Naughty and nice list (given to us in part be the CEO in part those we liked) of who could see there stuff and who couldn't. as the new boy I had the job of showing those on the nice list the porn caught in the mail filter and coping it to a usb stick or CD for them. (and a copy to the IT porn server to which the CEO had access) after a year there my present when I left 3 cd's of porn from the server.
(for the record the Women got the dirtiest stuff)