Sometimes the best hires aren’t the ones actively looking for a job. Better known as “passive” candidates, these gainfully employed professionals are reasonably happy, but might be willing to consider a more attractive offer.

Finding these potential hires requires recruiters to be more active in their pursuit, but it’s definitely worth the effort – passive candidates comprise 84% of the potential workforce, according to the Department of Labor.

How do you find these passive candidates, approach them, get your company on their radar, and ultimately recruit them? We asked experts in the field who have successfully recruited passive candidates for their advice.