As we first touched on in the middle of June, McCann San Francisco has laid off approximately 40 staffers today, a tally that’s now been confirmed by an agency spokesperson.

Another source tells us that most of those let go were mid-level people from the Microsoft account, which is not surprising considering that the Microsoft Office business now belongs to JWT.

Still, it was only just over a month ago that McCann’s PR folks flatly denied our initial inquiry about the agency losing the MS biz. Now that it’s fact, how long will this loss continue to sting?

More: “McCann SF’s Losing Around 50 in July”