OSHA does not have any guidelines regarding the length of time scaffolding can stay up. In theory, a scaffold could remain in place indefinitely. However, many municipalities have laws or ordinances that may require disassembly after a specific time frame. You'll want to check with your local government agency to determine the acceptable duration in your area. No matter how long your scaffolding stays up, you'll want to inspect it before each use to ensure it's stable and safe for your workers.