Retail: set in a big/medium-sized shop with "dilbert"'s attitude.

[halfeye]

I haven't archive binged this, so I don't know how it starts.

http://retailcomic.com/

Marla is the heroine/protagonist, Stuart is her manager, he got promoted to regional, she got the shop, he's still giving her grief over stuff that's not her fault. Cutomers are genenally unreasonable.

[Knaight]

It's not bad, although it's very much a syndicated comic on the web and not a webcomic per se, with the differences in content and attitude that implies.