How to address coworkers' Save the Dates & Invitations

Do they have kids or are you inviting kids because you can write The Smith Family. I don't know the proper etiquette, but I am sure someone else on here does.

Spouses should always be invited, therefore they should be addressed to the couple, Mr. & Mrs. John Smith

Husbands names always go first, so yes Mr. & Mrs. John Smith is the correct way to do it even though you don't really know the husbands. Also not using a first name is a good way to go.

I addressed all of my invites to Mr. & Mrs. Smith and left out the first names. It bothers me to call a women by her husbands first name. And while Mr and Mrs John and Jane Smith is correct I thought it was too long.

For our save the dates, we went a little more informal and did John and Jane Smith, but for the invitations I think we are going to do a combo of Mr. and Mrs. John Smith, and for couples with different last names (which we have a lot of on our list) we're doing John Smith and Jane Doe (no Mr or Mrs). Basically I think including the wives names would be totally appropriate because there are lots of different ways to do it.

Thanks Ladies!!!

I actually just received one from a co-worker. The outside envelope was addressed to me only, then there was an inside envelope that simply said "Lia & Tim." That made me assume he was invited, and wasn't sure about his last name.