Home for the Holidays — Gary Reilly

Taxi driver, Brendan Murphy, abandons his cab and the mean streets of Denver for his hometown, his dear ol' Maw, and an Irish Catholic clan the size of County Cork. It's Christmastime in Wichita.
The fourth book in the Asphalt Warrior series has Murph reluctantly re-establishing relationships with his brother and sisters while trying to save an old friend from making a soul-killing mistake: seeking a socially acceptable job.
It will take all of his persuasive powers to rescue Jimmy Callahan from The Suits. That, and maybe a Christmas miracle.