Yes, but without specialist knowledge of what the statistics are based on, I prefer (other than an aside) not to draw any conclusions. Since it's the OECD, I imagine they're pretty much comparing apples to apples, but, as you say, there are countries with benefit systems and countries without.

It is intriguing, though, to note that some countries generally cited as examples of economic "success" have above-average numbers of people inactive for reasons of sickness and disability, while countries currently cited as basket cases (France and Germany yet again) have far fewer.