It's not people who work for a living that are at particular risk, it's people who work for a living AND have ordered their affairs in such a way that even a short absence of work would result in financial disaster.
Fortunately for employers, most people do arrange their lives in this way. It's easy to see why - you can have your house, car, wife and 2 veg, shiny stuff and the occasional vacation at the time you feel entitled to them, rather than when you're old, jaded and impotent. Of course, the more stuff you acquire on credit or contract to pay for in endless monthly installments, the more jobs of precisely this kind become available and the more money there is for the people who employ them.
It's not even a new phemomenon, back in the days of the company store, it would be well stocked with alcohol at the end of the week so that the workers' wages would be in till by the end of the weekend and the penniless workers would have no choice but to be in work bright and early on Monday morning.
If more people had a "fuck you" buffer in their finance stream, the employment experience would be very different. Most people, though, don't even consciously think about their leap into premature indebtedness and most of those that do would take the badge rather than feel they were "reduced" to using public transport or drinking water from the tap.