My general kit for such situations, I worked in a retail setting a bit and had to commute, is to have a separate set of travelling clothes. Sturdy stuff and nondescript. Jeans, tee shirt, canvas long sleeve shirt, light water resistant jacket with hood in collar, leather boots.
If the area is cold and wet consider substituting synthetic hiking pants and shirt so you don't end up wet and cold. Also adding a pair of synthetic gloves and a hat. Down here it is less an issue.
The dressy stuff gets stuffed into a gym bag. Bulky stuff like shoes and belt get left at the office.
Travel kit is simple. A bit of food, a couple of Clif bars, a bit of water, two half-liter bottles of water.
A couple of basic tools, Leatherman and a tiny pocket knife. An LED flashlight that uses two AA-cell lithium cells. An Inova 'key-chain' light. A mini-Bic and a bottle of life-boat matches.
A pair of cotton bandannas that work as bandages, air or water filters, ties, bindles, etcetera. A hank, about 30', of light line. Pair of ear plugs. Two heavy, contractor grade, garbage bags. One high quality space blanket.
Medication: Four aspirin, four ibuprofen, two fast-acting antihistamine (Chlor-trimeton), two regular (Diphenhydramine).
A 'travel