Ostensibly, they fall in the 53% shown and ceded-to by the author (then totally discarded). His point in the article is to make out like the cause for the 47% is solely due to the 'really poor' and the 'elderly' (a sympathetic term, isn't it?)
He then proceeds to totally discount the percentage of 47%' ers that pay what he and Democrats lovingly call "payroll" taxes as if they are actual 'cart pullers' instead of USERs. Actually, giving them double-credit for their payments, both as taxes, and as payments to SS/Medicare.
The truth is that half this country is on the dole, period. They pay no taxes that actually are intended for running the country, ineptly as it has been run, and they are simultaneously claiming (trying to) extra benefits from double-counted payments. It is disgusting. Leeches and users. This isn't the country in which we grew up (well, at least for me, anyway). It is overrun by leeches, moochers and no-accounts that offer no value added whatsoever.
Is the problem that they pay no taxes at their income level or is the problem that we just have too many underworked and overpaid people at all levels of government who want to be paid to run the country.