Organisational Change and Development"Change is the only constant."– Heraclitus, Greek philosopherIntroductionEnvironmental change is an inevitable process to which successful organisations have to respond effectively in order to imbibe the positive factors which lead to the change. These factors can be economic, political, employment levels, management related, financial policies and market driven. These factors can impact an organisation alone or in varied combinations. The organisations which embrace change and move out of the comfort zone to implement it are the only one which can have long term future with rest of them languishing in the dark. (Bridges, W. 1988)Process of change in an organizationProcess of change in an organisation can get started from internal and external stimuli and can permeate deep into the organisation so as to affect its basic structure. Some organisations thriving on innovation lead the change internally to improve efficiency and competitive advantage. Some inculcate change when it comes from the external forces like competition, industry fluctuations and economic climate. (Rieley, J. B. and Clarkson, I. 2001)Change management deals with the relationship of organisational change and human resource change in order to deal with the change effectively