Loneliness in the workplace is not merely a matter of individual well-being; it's a significant business challenge with tangible consequences for productivity, engagement, retention, and ultimately, the bottom line. Stress-related absenteeism attributed to loneliness costs employers an estimated $154 billion annually in the U.S. alone. In this paper we detail the high cost and urgency of the problem and lay out some concrete action steps to take at your organization.