The study involved giving college-educated professionals occupation-specific writing tasks and exposing half of them to ChatGPT. Results showed that ChatGPT improved output quality, reduced time taken, and enhanced productivity. It also helped low-ability workers, compressed productivity distribution, and favored idea development and editing. The study suggests that generative AI tools like ChatGPT could replace some types of writers in the workplace, leading to reduced labor costs. However, it also highlights the potential for AI technologies to assist students with writing assignments and improve their idea generating and editing abilities. Teachers must integrate AI technologies into their lesson plans to prepare students for the evolving labor market.