Human resources (HR) can evaluate the success of an onboarding program by implementing both formative and summative measurements to gather consistent data over time (Davila & Pina-Ramirez, 2018, p. 91). This involves tracking metrics such as employee retention rates, time to productivity, and feedback from new hires to quantify the program's impact (Davila & Pina-Ramirez, 2018, p. 91). "Evaluation can involve formal testing or informal conversations" (Lumen Learning, n.d.). Employee retention rates provide insight into the effectiveness of the onboarding process by measuring how long new hires stay with the company after completing onboarding. Time to productivity metrics assess how quickly new employees become fully functional in their roles, indicating the efficiency of the onboarding program. Feedback from new hires offers valuable qualitative data, allowing HR to identify strengths and areas for improvement in the onboarding process based on the firsthand experiences of employees (Davila & Pina-Ramirez, 2018, p. 91). Together, these metrics provide a comprehensive understanding of the impact of the onboarding program on employee engagement, retention, and organizational performance and assess the program's cost-effectiveness