<strong>Orientation:</strong> Because workplace bullying has detrimental consequences on the profitability, work quality and turnover intention of organisations, this phenomenon should be addressed. Perceived Organisational Support (POS) was explored since factors such as role clarity, job information, participation in decision-making, colleague support and supervisory relationships might act as buffers against workplace bullying, subsequently influencing the turnover intention of the organisation.<p><strong>Research purpose:</strong> To investigate the role of POS as moderator in the relationship between workplace bullying and turnover intention across sectors in South Africa.</p><p><strong>Motivation for the study:</strong> Workplace bullying is a worldwide concern and it is unclear whether perceived organisational support moderates the relationship between workplace bullying and turnover intention.</p><p><strong>Research design, approach and method:</strong> A cross-sectional survey approach with a quantitative research design was used (<em>N</em> = 13 911). The South African Employee Health and Wellness Survey (SAEHWS) was administered to explore the experiences of bullying behaviour, POS and turnover intention.</p><p><strong>Main findings:</strong> Bullying by superiors is more prevalent than bullying by colleagues. A positive relationship exists between workplace bullying and turnover intention. Role clarity, participation in decision-making and supervisory relationship moderates the relationship between bullying by superiors and turnover intention.</p><p><strong>Practical/managerial implications: </strong>This study creates an awareness of the prevalence of workplace bullying in the South African context so that sufficient counteraction can be encouraged.</p><p><strong>Contribution/value-add:</strong> This study contributes to the limited research regarding workplace bullying in the South African context by quantifying the relationships between workplace bullying POS and turnover intention.</p><p><strong>How to cite this article:</strong> Van Schalkwyk, L., Els, C., &amp; Rothmann, S. (Jr). (2011). The moderating role of perceived organisational support in the relationship between workplace bullying and turnover intention across sectors in South Africa. <em>SA Journal of Human Resource Management/SA Tydskrif vir Menslikehulpbronbestuur, 9</em>(1), Art. #384, 13 pages. http://dx.doi.org/10.4102/sajhrm.v9i1.384</p>