The research attempts to investigate the sustainability of an organisation. While investigating the sustainability several issues were touched upon in the literature review and the research result and this issues were financial sustainability, Workforce Sustainability which includes sub-issues like labour force, efficiency and effectiveness of the workforce, competition from other source of competition and Potential source of competition that could arise and these issues were investigated by using the research methods tools of qualitative research in which informal discussions with employees of the salvation army were held and observations were made to find out the results of the research. This Research was a secondary research. After finding the results there was an analysis on the research through which a conclusion was drawn and with help of the conclusion some recommendations were put forth. All in all this research has every tools and methods to understand and investigate the sustainability of the Salvation Army.