This study examines how relationships between employees and supervisors in Chinese organizations can impact employees' organizational-based self-esteem and job performance. The researchers collected data from 219 employee-supervisor pairs at a Chinese bank. Their analysis found that high-quality relationships involving both work and personal domains between employees and supervisors were positively related to employees' organizational-based self-esteem. Additionally, career mentoring from supervisors moderated the relationship between organizational-based self-esteem and job performance.