Question: Why did Paul and the other guards show concern for Percy after Wild Bill caused Percy to piss his pants?
Answer: They may not like him but they still want to make sure he's ok.
Greg Dwyer
Exactly. Plus having a guard killed by an inmate on their watch would reflect poorly on them, to say the least. And Percy had political connections as well.
BaconIsMyBFF
Because they are caring human beings, and feel some emotion towards someone in trouble, unlike Percy himself.