Last Night at the Lobster
is a nice little tribute to the working stiffs in customer service (waitstaff, store clerks, etc.), which can often feel like a thankless job. Manny DeLeon is the manager of a Red Lobster, operating on its last night of business, on a snowy evening just days before Christmas. He tries to keep his crew together until the end in this poignant short novel, dealing with evil toddlers, and toddling old folks; a flagging inventory and absconding employees. It's poignant without feeling maudlin.
I've read many longer books that are not filled with as many nice moments as Last Night at the Lobster