Lin Shigong worked a 996 schedule until it killed him, then transmigrated to the world of Journey to the West.
He opened his eyes to the Southern Heavenly Gate, a halberd, and a wooden badge the size of a fingernail hanging on his chest: Labor Contractor.
In his previous life, he worked for a boss. In this life, he works for Heaven, and he's still a contractor.
The regular employee in charge tosses him the night shift: "Temp, go work from midnight to dawn."
Lin Shigong smiles obsequiously. "Sure thing, Boss."
System: [You have been subjected to workplace bullying. +50 Diligence Points.]
A Golden Immortal official smashes a cup. "Pick it up."
Lin Shigong crouches down to collect the pieces. "This humble one was out of line."
System: [You have been humiliated. +500 Diligence Points.]
Other people cultivate immortality through talent, a master, or connections.
He cultivates through patrols, covering shifts, and getting yelled at.
Five hundred years later, outside the Hall of Miraculous Mist.
A Great Encompassing Golden Immortal goes berserk, and a hundred thousand heavenly soldiers can't stop him.
Lin Shigong happens to pass by and casually presses him down.
The whole place falls silent.
The Jade Emperor hides behind his throne. "Who is that guy?"
Taibai Jinxing checks the records. "Lin Shigong. Southern Heavenly Gate. Labor Contractor."
The Jade Emperor: "...Wasn't he just a temp?!"
Lin Shigong dusts off his hands and smiles.
"So what if I'm a temp?"
"Temps can make havoc in Heaven too."