Hmm, this is one of those questions where my first instinct is to veer away from the usual corporate thrillers everyone recommends. Sure, books like 'Then We Came to the End' capture the soul-crushing hilarity of office life perfectly, but the career challenges that really stick with me are the ones where the job is almost a character itself, something physically and mentally consuming.
I'd throw 'Kitchen Confidential' by Anthony Bourdain in the ring, even though it's a memoir. It reads with the raw, chaotic energy of a novel and digs into the sheer, unsustainable grind of professional kitchens—the hierarchy, the pressure, the lifestyle. It's less about climbing a ladder and more about surviving the shift. For a fictional deep dive into a very specific professional world, I'm weirdly fascinated by 'The Shipping News' by E. Annie Proulx. It's not a fast-paced career ascent story at all; it's about a broken man stumbling into a job he knows nothing about (writing the shipping news for a tiny newspaper in Newfoundland) and how that mundane, ritualistic work becomes a slow, painful anchor for rebuilding a life. The challenge there isn't competition, it's competence and meaning.
On a totally different note, if you want the anxiety of modern gig-economy precarity, Ling Ma's 'Severance' is a darkly funny and terrifying blend. The protagonist has a mind-numbingly boring job producing Bibles while a pandemic slowly ends the world. The novel nails the eerie dissonance of performing meaningless corporate tasks while everything falls apart. That's a career challenge of a whole other magnitude.