What do you do at work? What type of clothing do you wear while at work? How concerned are you with printing? How much do you want to spend?
If you have big pockets and can get away with printing a little, you might be able to get away with carrying in a side pocket, with an empty chamber for safety reasons. I've carried this way at work a couple times now with my similarly sized Sig, and it seems to work decently.
If you really need deep concealment, a well made and well fit shoulder holster could suffice, even under just a t shirt.
I'd probably try to stay away from IWB or OWB holsters if your shirt coming up slightly concerns you.