Humour is often considered trivial or unprofessional; this research verifies that it is neither. The value of humour resides, not in its capacity to alter physical reality, but in its capacity for affective or psychological change which enhances the humanity of an experience, for both care providers and recipients of care. Relevance to clinical practice. In the present era which emphasises technology, efficiency and outcomes, humour is crucial for promoting team relationships and for maintaining the human dimension of health care. Nurses should not be reluctant to use humour as a part of compassionate and personalised care, even in critical situations.