Work in multiple cities which is not usually what my employer calls "home office".

[ohiocm]

My employer has my "home office" in Vandalia, Ohio, however, with the work I do day to day I am actually only at the "home office" a few days a year. The rest of the days are spent in other cities and could be more than one city a day. How to handle?

[Hal_Al]

From a practical standpoint, you leave it alone. You're paying tax to Vandalia, on your total income, for the year, and that's good enough.

If you did not work in an any other individual city more than 20 days, you also meet the technical-legal requirement. Even if you didn't, the responsibility falls on your employer to do the proper withholding, not you.

You don't mention where you live.  You normally only have to file a return in the city you live in. It is not necessary to file one in the city you work in, if different. Your employer will remit withholding to the city you work in, but you do not file a return unless you're claiming a refund or your employer didn't withhold enough ( both highly unusual). The city you live in will allow a credit or partial credit for the withheld tax you paid to the work location city.