This is pretty suspect to me. I think it would mean more if it were “legally required days available” or “average days taken” or “average days available”.
assuming that the parents reside in the main business city and work in the retail sector
This just seems bad to me. In America, there’s no way parents who work in the retail sector get half the year off.
The data source is described pretty well. If you think the US should score lower this is your personal experience and not backed up by the data.
I do like how well they describe the data source (other than the unclear “main business city” part). It gives enough detail to know that the FMLA applies, which would total the 168 days shown here. FMLA is unpaid, however, but the chart says paid days, which should be zero. The “data souce” page does not specify that the leave is paid, so I’d suspect it’s wrong for other countries as well.
Pretty shocked that the UK isn’t at the bottom of European countries.