Mouna, you have highlighted a number of areas in HRM, each of which contains a number of other areas of potential research interest. What specific problem in HRM do you wish to study/investigate?
In addition to the valuable comments/questions in relation to your topic as provided by other respondents, the guidance as per the following publications should be helpful for your preparation of a research proposal.
Al-Riyami, A. (2008) How to prepare a Research Proposal, Oman medical journal, 23, 2, pp. 66-69.
Baker, M. J. (2000) Writing a Research Proposal, The Marketing Review, 1, 1, pp. 61-78.
Kivunja, C. (2016) How to Write An Effective Research Proposal For Higher Degree Research in Higher Education: Lessons From Practice, International Journal of Higher Education, 5, 2, pp. 163-172.
Sidik, S. M. (2005) How To Write A Research Proposal, The Family Physician, 13, 3, pp. 30-32.
Terrell, S. R. (2016) Writing a Proposal for Your Dissertation: Guidelines and Examples. New York, NY: The Guilford Press.
Vivar, C. G., McQueen, A., Whyte, D. A. and Armayor, N. C. (2007) Getting started with qualitative research: Developing a research proposal, Nurse Researcher, 14, 3, pp. 60-73.
Thank you all for your insightful answers, I really appreciate the time and effort given for this Kenneth Lui-ming Ngie John Mendy Saeid Nosrati .
Actually I decided to work on the Work-life balance subject with a comparison with eastern / emergent societies like UK vs Morocco. Please feel free if any feedback / comments about this decison.