This paper presents the first international assessment of the Lightcast vacancy data representativeness based on benchmarking against officially reported vacancy data in Australia, Canada, the United Kingdom and the United States. The analysis compares distributions in the Lightcast data versus official data across large (TL2) regions, industrial sectors and occupational categories. The analysis shows differences in representativeness across countries and on the three dimensions considered. In general, regional representativeness is considerably better than both occupational and sectoral representativeness.