COVID-19 has caused a global rush of universities to transfer their courses online to maintain continuity in student teaching and learning. The study presented in this article investigated the preparedness of academics in Small Island Developing State (SIDS) universities for shifting to emergency online teaching. To examine the impact of preparedness and other factors on the efficacy of academic staff in performing their work duties during the pandemic, the research team collected data from 75 respondents who filled in a questionnaire. In addition, they conducted semi-structured online interviews with a subsample of 5 respondents. They found that most academics had the necessary tools and infrastructure to teach online, including access to reasonably fast internet connections. However, many of them lacked adequate training in applying the use of technology to teaching, which limited their preparedness for developing e-learning activities. Thus, the study found that, insufficient competence in using educational technologies and inadequate university support impacted academics' work efficacy significantly. This impact was less pronounced for staff who had prior online teaching experience, which suggests that their pre-pandemic experiences lessened their dependence on support for online teaching when the sudden need arose. The authors' thematic analysis similarly found academics' uneven familiarity with technology and the need for more "at-the-elbow" technological support during crises to be significant, as well as a need for more leadership to deal with complex situations. Based on their findings, the authors conclude that greater preparedness for online teaching -- and thus improved efficacy -- might be achieved through a balanced mix of independent learning (by doing) on the part of academic staff and customised and targeted formal professional learning (through training provided by the university).