Mum takes Pheobe to work twice a week (she works 3 days). Pheobe loves the attention - there is nearly always another dog to play with, and she has the run of the entire office - just floors and mazes or stairs and rooms which she loves. Everyone knows her so would return her if there was a problem!
I take my 4 to work every day (provided the basset can be bothered to get out of bed!) VERY understanding boss as the office is not that big, and is now covered in dog hair (don't you just love the Autumn moult?)