Under-performance is an important issue for organisations because it detracts from the organisation achieving its goals and can put both personnel and clients at risk. Under-performance can cover a range of issues, such as knowledge, skills, behaviour and attitudes. It is about achieving less than expectations, or performing below the required levels. Under. A single incident will not normally constitute under-performance, but repeated less important infringements may do so. One of the commonest ways of diagnosing under-performance is when a manager perceives that the individual is not performing at their expected levels or their attitude is inappropriate. Sometimes it is the level or nature of complaints that indicates underperformance of an individual or organisation, or an individual may recognise that they or their organisation are under-performing and seek assistance. Once under-performance has been recognised, the solutions will depend on the diagnosis.