<p>As a critical boundary management strategy, commuting role reattachment significantly influences the work and family domains. Employing a two-study, person-centered design, this research first identified distinct profiles of commuting role reattachment and then examined their heterogeneous effects on thriving at work and family. In Study 1, latent profile analysis (LPA) on data from 603 employees (Sample 1) revealed five distinct profiles: Work-Focused Role Reattachment, Family-Focused Role Reattachment, Dual Role Reattachment, Moderate Role Reattachment, and Neglected Role Reattachment. In Study 2, using an independent sample of 551 employees (Sample 2), we analyzed the differential effects of these profiles on thriving at work and family via the BCH method. The results demonstrated significant heterogeneous effects. Specifically, the Dual Role Reattachment and Moderate Role Reattachment profiles were positively associated with thriving at work and family. In contrast, while the Work-Focused Reattachment profile predicted enhanced thriving at work, this positive effect did not extend to the family domain. Conversely, the Family-Focused Reattachment profile was linked to enhanced thriving at family, but this effect did not spill over into the work domain. This study contributes by: Introducing a person-centered approach to reveal heterogeneity obscured by traditional variable-centered methods; Establishing the theoretical and empirical utility of examining inter-individual differences in commuting role reattachment; Extending the social embeddedness model of role thriving. Practically, our findings offer actionable guidance for organizations seeking to support role thriving by better managing the commuting transition.</p>