Purpose: This paper aims to draw on data from a study of professionals' experiences of work and learning framed by a complex adaptive systems approach to examine the nexus of work and learning in complex adaptive organisations. Design/methodology/approach: The study used an adapted phenomenographic approach and the complex adaptive systems conceptual framework (CAOCF) to analyse data from semi-structured interviews with fourteen professionals from a variety of organisations and industry sectors within Sydney, Australia. Findings: The findings highlight that work in complex adaptive organisations is best described as fluid work. Further, the findings suggest that fluid work influences professionals towards flexible learning approaches that take place in the flow of work. Originality/value: This paper empirically demonstrates the nexus of work and learning as experienced by professionals in their day-to-day work, as well as the ways in which fluid work influences flexible and adaptable learning through participation in work.