Purpose: - The paper aims to identify the factors underlying the existence of Maternal-wall biasness and to identify the status of Maternal- Wall Biasness for working mothers in career advancement. Design/ Methodology/ Approach:- The research methodology was mainly based on literature reviews and on the primary data collected from 400 women faculties working in Higher Education Institutions of NCR in India and Maternity Benefit (Amendment) Act of India, 2017 has been exclusively referred. On the basis of Primary data analysis and statistical analysis through Multivariate Analysis of Variance (MANOVA), the findings and recommendations have been developed. Findings: - The eight factors of Maternal-Wall Bias were identified through literature reviews viz: - Work - Life Balance, Maternal-Wall Bias, Supportive husband or; family, Self – blocking/ Self Psychological Barrier, Gender Discrimination, Good-Old-Boys Club, Government Regulations and Institutional Policy. It was also found that the employers reacted negatively for the Maternity Benefit (Amendment) Act of India 2017. Practical Implications: - The existing rules and regulations are not implemented properly at ground level of academic institutions and women having their personal or, social barriers due to which they are not seeking high level positions as well as give up or fail to pursue promotions because of the state of accepting something unpleasant that women cannot change like; organisational obstacle in the form of Good-old-boys club. Original Value: - It is beneficial for HR Policy makers and HRD Ministry of India.