Google’s 20% time policy lets employees spend part of their working time developing projects outside their main duties.
The policy became associated with Google’s engineering culture and encouraged employees to explore ideas that were not necessarily part of their assigned projects. It was intended to support experimentation, creativity, and bottom-up innovation inside the company.
Products commonly linked to this culture include Gmail, Google News, and AdSense, although the precise role of the policy in each product’s development is sometimes simplified in popular accounts. Google has also changed how the practice works over time, so it should not be treated as an unconditional promise that every employee always receives exactly one day per week for personal projects.
The idea resembles earlier innovation practices at other technology companies, but Google’s version became especially influential in discussions of startup culture. It helped popularize the belief that protected exploratory time can produce valuable products alongside a company’s core work.