The document emphasizes the critical importance of effective onboarding processes for new employees, highlighting that a significant percentage of new hires decide to leave within their first six months. It provides statistics on turnover costs, which can reach up to 300% of a senior hire's salary, and outlines strategies for transformational onboarding that enhance engagement and reduce attrition. The PERMA model, focused on positive psychology, is suggested as a framework to improve the new joiner experience, which includes personalized onboarding journeys, ongoing support, and engagement strategies.