The OECD defines "low-paying" as jobs that earn less than two-thirds of a country's median income. On average, around 16 percent of jobs in OECD countries are considered low-paying. In the U.S., over 25 percent of all jobs qualify as such.
No big surprise there. As more and more of the wealth in the US gets sucked up by the 1% and the 0.1%, the rest of us struggle to make ends meet. The rest of us take jobs that don't pay the rent, that don't allow us to build any savings. So many of us end up taking more than one job, or working a collection of part time jobs to try and get ahead. Which means no over-time money. And probably no benefits.