The merger & acquisition (M&A) process with foreign companies can cause changes in the company, ranging from changes in structure to processes and ways of working in the company. This study aims to determine the influence of workplace factors in the form of organizational commitment, organizational culture, organizational support and individual factors in the form of job satisfaction, work attachment and affective commitment to employee readiness to face change. Data collection in this study used the probability sampling method. The number of participants obtained in this study was 156 employees at the head office of PT Tbk Organization culture, organizational commitment, job satisfaction, work attachment and individual commitment (affective commitment) had a significant influence on readiness for organizational change (p = 0.00). Organizational support had no significant effect on readiness for organizational change (p = 0.053). Organizational culture factors are the most influential factors on readiness for organizational change.