In the late 1990's researchers began studying spirituality as a workplace phenomenon. In the year 2000 a distinction was made between individual spirituality and organisational spirituality. This meant that spirituality could be studied on more than one level and that it was no longer just a personal phenomenon, but rather that organisations (as non-human entities that are made-up of clusters of humans) could in fact also be spiritual entities. In 2004, Kinjerski and Skrypnek, identified a third dimension of spirituality distinct from individual spirituality and organisational spirituality the experience of spirit at work. The aim of this study was to gain insight into the functionality of spirituality by testing the relationship between these three spirituality constructs individual spirituality, organisational spirituality and the experience of spirit at work and the resultant impact of these constructs on two positive work outcomes work engagement and affective organisational commitment. A sequential mixed methods approach was utilised in this study and the research was conducted in two phases. The first phase of the research was quantitative. During the quantitative phase of the research an online survey was distributed to respondents across South Africa. The second phase of the research was qualitative and consisted of follow-up semi-structured personal interviews with selected respondents to the survey. It was found that the three spirituality constructs individual spirituality, organisational spirituality and the experience of spirit at work are independent constructs but that strong positive correlations exist between individual spirituality and spirit at work, between individual spirituality and organisational spirituality and between spirit at work and organisational spirituality; with the strongest correlation between spirit at work and organisational spirituality. From these correlations one can conclude that the experience of spirit at work has the greatest impact on work engagement and organisational commitment; followed by the level of organisational spirituality in the workplace. Therefore, organisations that are more spiritual seem to have employees who are more engaged in their work and more committed to their respective organisations. Spirit at work was found to be the strongest predictor of work engagement, meaning that when there is an increase in experiences of spirituality in the workplace, work engagement levels also increase. This means that the extent to which people feel engaged and immersed in their work, is dependent on the extent to which they experience spirit in their work. This finding highlights the critical importance of enabling employees to discover their strengths and passions and matching them to work that they both enjoy and are good at, for enhanced work engagement. Spirit at work was also found to be the strongest predictor of organisational commitment. As the experiences of spirit at work increase, the levels of affective organisational commitment in the organisation also increases. It could thus be argued that when people experience spirit at work or in their work, they tend to be more committed to their organisations. The current study has strengthened the business case for workplace spirituality. The findings of this study indicate that the organisational environment is the greatest predictor of whether employees will experience spirit at work or not and thus indirectly the greatest factor for predicting work engagement and organisational commitment levels. These findings substantiate the need for organisations to start playing a more active role in creating a work environment that is conducive for employees to experience spirit at work. There are a number of things that organisations can do to create more spiritual work environments and as a result reap the benefits of greater work engagement and greater organisational commitment. / Thesis (PhD)--University of Pretoria, 2016. / Human Resource Management / PhD / Unrestricted