Lots of work (as much as 80%) isn't advertised. Why aren’t all jobs advertised and why are so many hidden? There are lots of reasons—
• employers are too busy or don’t have the resources to advertise
• employers don’t have time to sift through the hundreds of applications they would get if they advertised
• employers aren’t sure where to post jobs
• employers don’t know they need you yet
• you’re looking in places where employers aren’t present
• you’re disconnected from people to talk with about work opportunities
• you’re not sure of what you’re looking for