If they work 40h a week, rent a single bedroom apartment at ~$1600 and the cost of living for one is ~$800 this leaves 2976 - 2400 = ~576 a month without special circumstances. In this case they don't have a car, drinks or meals outside the home, going out (movies/etc.), alcohol, dog, sport membership or travel and certainly no family. If they have one family member at ~600 a month they are down 24 dollars a month so they'd better not. [1]
Simply seeing that Amazon is doing so mindbogglingly well for itself that the value of their assets has grown by 52.65% in 2017[2] and while still holding ~22 billion dollars in reserve[3], workers are not adding some value (as is required in a Keynesian capitalist system) but an insane amount of value. And it is all trickling up while workers cannot afford to have a family.
[1]: https://www.numbeo.com/cost-of-living/in/Long-Island-NY-Unit...
[2]: https://www.marketwatch.com/investing/stock/amzn/financials/...
[3]: https://www.geekwire.com/2017/256-billion-apple-cash-amazon-...