The Open to work feature allows LinkedIn members to privately share their career interests with Recruiter users who aren't affiliated with their current or related companies.
Once a candidate opts to privately share their career goals with recruiters, LinkedIn Recruiter users will see Open to work on the candidate’s profile.
If an open candidate starts a new position, they'll be prompted to turn off their signal if they're no longer open to work. They'll also receive a reminder to respond to InMail messages from recruiters if they haven't responded to two consecutive InMail messages.
To view candidates who fit your search criteria and have specified that they're open to work: