I had to keep rechecking that this was, indeed, a zombie story, as there's no sign of them for at least 40% of the story.
The main focus of the story isn't actually the zombies at all, but rather the MC, who is having a very bad day, even before the zombies arrive. This would usually put me off a 'zombie' work, but the author does such a good job bringing readers into the MC's personal life that I didn't mind as much as I might have with other works.
The writing is very well done, and the MC's struggles to deal with his mentally ill mother, employment and woman trouble were all realistically written. I especially enjoyed a hysterical exchange between the MC and a police officer that had a lot of humor in it.
Worth the read if you can keep in mind that the zombies aren't actually the focus here, though they do eventually show up.