Professional and personal fulfillment of office managers/secretaries emphasizes the need for all office managers/secretaries to keep their skills and competencies current through career advancement opportunities. Career advancement serves as a tool that supports secretarial excellence. However, emerging evidence suggests that office managers/secretaries progress relatively slowly through the career ladder and participate less in professional development opportunities compared to their counterparts. Mentorship and self-efficacy are major determinants of career advancement, but the influence of these two variables on career advancement of office managers/ secretaries is yet to be explored. This study seeks to understand how mentorship and self-efficacy have influenced office manager’s participation in career advancement activities. This study used a descriptive survey design and content analysis of open-ended questions to examine differences in levels of mentoring functions and self-efficacy of office managers/secretaries. Results showed that demographic characteristics of the respondents closely matched the office managers/ secretaries workforce reported in other studies. There were similarities in some career advancement measures, significant disparities were noted in others. Considerable work is needed to bridge the gaps in career advancement between office managers/ secretaries and other professions. This study demonstrated that the structure of secretarial profession might hinder career growth of office managers, something that needs investigation in further details. Further research is necessary to validate these findings and understand the mechanisms that underlie these disparities.