A smart review from Dennis Kaplan has appeared at Eclectica (way back in the end of 2011):
There is not much plot to Personal Days, but part of the joyride is in the succession of familiar moments held up for inspection: the awkward elevator encounter, the too-peppy email, the infuriating battles with computers. Park's primary weapon is humor, but the absurdities he throws at us evoke deeper questions: is this the only way? Are people really wired for this? In one minor but telling moment we witness a desk jockey named Laars trying to locate a file on his computer.
The next day, Friday, the Sprout asks Laars for a file from last year. Laars's system of folders is so byzantine, his naming conventions so idiosyncratic, and his memory so poor, that he often has to do a global search of all the contents on his computer if he's looking for a file more than a few weeks old. He tries to guess what word might spring up in the document title, then hits Search.
I don't understand, the computer says.