A person came in to office last week (with the authorisation of the boss) taking photos for an internal course.
Photos were of staff working away.
Is this legal?
I have often seen photos in newspapers of staff working in shops, restaurants, schools etc - Is it legal for people to enter a workplace and take photos?
Well, if he had the authorisation of the boss and none of the workers objected I can't see there would be a problem. However, I don't think anyone's image can be used without their permission so your boss should probably have emailed around first asking if anyone had an objection.