I agree this kind of behaviour was quite common in the 1970s both in Scotland and in Denmark where I moved to in 1975.
I do not agree, however, the no-one took a blind bit of notice.
In my experience, the other women in the workplace warned you when you started to "Watch out for Mr. N - he can''t keep his hands to himself"
Most of us were adept at shrugging off unwanted hands, moving out the way, or saying in a joking kind of way, "Ups, I'm not that kind of girl." or "Keep it for your wife, will you?"
On one occasion I heard my sister say very loudly at a party, "Will ye tak' your haand aff my erse?" She said later that she had twice asked him more politely to remove his hand from her backside, before resorting to broad Glesca to express the same wish.
The difference between then and now is that then we dealt discreetly with blokes who insisted on kissing us inappropriately (you could even get away with warming their ears then) whereas now everyone starts screaming "sexual harrassment" to such an extent that the honestly meant compliment is dead, as no man dares say, "You look nice in that frock, hen" any longer.
Fine that the wandering hands are a thing of the past - if they are, but how would I now 71 know if they are? but a pity if neither men nor women can pay each other compliments or flirt in the Continental fashion any more. I seem to remember feeling chuffed when workmen wolf-whistled at sixteen-year old me back in 1967.