It could be . At one of my friends' (gay) previous jobs, he and a bestie female coworker referred to each other as work-husband and work-wife. Certain terms can be used innocently among others.

could be nothing, but just keep an eye on the situation. if they start to have to work late a lot, that's when you really need to worry.

"work spouse" is a misleading term. 99% chance nothing untoward is occurring.

Am I the only one who hasn't heard of a work spouse? Then again, most of my coworkers are female and the two males in the office are old enough to be all of our fathers, so... yeah. But seriously, I wouldn't be comfortable with being in a relationship like that - on either side. Hopefully it's completely platonic.

What would you have thought if hubby's number were I her phone in any other name? would you think nothing of it if it was his first/last name? Or would you think they were having an affair? I am NOT saying nothing is going on. I am saying consider how things would be thought if in the other situation. It may be innocent. it may be a joke between them. in no way is it appropriate. It is worth discussing with your hubby how it looks and how it makes you feel. get the whole story for sure.

She's your friend and is fully aware he's your husband, it's already inappropriate. Imagine if you had his best friend in your phone as "work husband?" How would he feel if you called his best friend and it showed up as "work wife?" Disgusting. They're both trash.

Sounds like they are just really good friends. So nothing to worry about, not like one drunk night can suddenly change that.