This paper investigates why Israeli citizens complied with measures taken to mitigate the spread of the COVID-19 virus in early April. At the time, Israel had relatively stringent mitigation measures that encouraged people to stay at home and keep a safe social distance. The data of 411 adult participants, gathered using survey research, showed that overall, compliance levels at that time were high. It finds that compliance depended on a combination of moral factors, such as people's moral duty to obey the law and people's tendency to obey the law generally. In addition, people who had friends over 75 years old were more likely to comply. Furthermore, people were more likely to comply if they were able to do so, and less likely to violate if they did not have the opportunity to do so. The study did not find that fear of punishment (deterrence) was significantly associated with compliance. Overall, these findings are in line with studies conducted the United States, the United Kingdom, and the Netherlands. Notes: This working paper offers a first look at the data collected before developing it into a fully theorized publication. It has not yet been peer reviewed. The authors declare that there is no conflict of interest. published studies have analysed compliance with COVID-19 measures in early April, focusing on the United States ("US"), The United Kingdom ("UK"), and the Netherlands. Their findings showed that compliance levels were generally high in early April. They further showed that compliance did not rely on deterrence or threat of enforcement. Rather, compliance depended on people's individual characteristics and the situation they were in. In particular, people showed greater compliance when they had better impulse control (Netherlands and US), when they were better able to stay at home or keep a social distance, and when they lacked of opportunity to break the rules (most clearly in the US and Netherlands). On the other hand, intrinsic motivation also influenced compliance in these three countries. People were more likely to comply when they perceived greater obligation to obey the law (UK and Netherlands), when they saw many others complying (US and Netherlands), when they morally thought people should obey the measures (US and Netherlands), or were more afraid of the disease (Netherlands only). The present study analyses what shaped compliance in Israel. It offers data that helps understand compliance with the COVID-19 measures in Israel. The study answers two crucial questions in relation to these mitigation measures. First, it studies to what extent people have complied with the measures taken. Second, it analyses which factors have played a role in shaping people's compliance. The study thus adds a fourth country to our series of studies and further expands our understanding of compliance with mitigation measures during the first wave of the virus. Israel presents an interesting case to study compliance for several reasons. First, it has a longer history of dealing with national safety threats, and...