“Individual’s supply of energy is abundant and expandable.” (Hammer & Thompson citing Marks)
“Multiple roles may increase or enhance one’s energy by increasing sources of identity, self-esteem, rewards, and resources available to cope with the multiple demands.”

As defined by Hammer & Thompson citing Marks in Work-Family Role Conflict, A Sloan Work and Family Encyclopedia Entry. Chestnut Hill, MA: Boston College. Retrieved from: Marks, S. R. (1977). Multiple roles and role strain: Some notes on human energy, time and commitment. American Sociological Review, 42, 921-936. Thoits, P. A. (1987). Negotiating roles. In F. J. Crosby (Ed.). Spouse, parent, worker (pp. 11-22). New Haven, CT: Yale University Press