'The results of KPMG surveys of corporate social reporting reveal that while, in 1993, 13 per cent of the top 100 companies in 10 countries published a separate report about their environmental and social impacts, this figure almost tripled to 33 per cent (for 16 countries) in the 2005 survey. At the same time casual observation leads to the conclusion that in the 1990s "environmental" and/or "health and safety" reports dominated the reporting scene. More recently, however, most companies publish an "environmental and social" or "sustainability" report. In particular, from the 2002 survey to the 2005 survey, the percentage of separate reports (for the global top 250 companies) that correspond to the label "sustainability" and "social and environmental" have increased from 24 per cent to 85 per cent, with a corresponding decline (from 73 per cent to 13 per cent) for environmental, health and safety reports.'

Task

Use institutional theory to explain these large-scale shifts in both report production and the names being given to the reports.