In England, it's quite common to use informal affectionate terms. They vary regionally - love, pet, hinny, babs, duck, cock, hen, flower, petal, princess etc. Their use isn't uncontroversial, but they're widely accepted by a large proportion of the population and frequently used in many offices.
Fair enough, as with most things in life, it's context dependent. I'm speaking from an American perspective, and even in an endearing manner I would never use `babe` because that's something you'd call your significant other. Not a professional colleague.
https://yougov.co.uk/news/2012/02/08/being-called-babe-offen...