Effective December 1, 2016, the US salary threshold for overtime goes up from from $455/week to $913 ($47,476 per year). If you make less than that and work more than 40 hours per week, you have to be paid overtime, at time and a half. This applies to 4.2 million US workers.

The salary threshold hadn't been updated in a generation, which is why overtime went away. Now, it's back.