Every society has its own way of talking about socioeconomic class.
In America/Canada, people talk about the "poor", "(lower/upper) middle class", and "upper class", as well as the "1%" and ".1%"; basing everything off of economic levels alone.
In places like the the UK however, and pardon the fact I'm not a brit, they talk more about the "working class", which including everyone who mainly does low skilled jobs and lives off a wage alone, and contrast it with a "middle class" of people who are more specialized and less bound to an employer. A distinction that of course often results in people such as myself getting confused when reading the guardian, seeing sentences like "and it was vary unexpected that Corbyn picked up so many middle class voters". :)
Given this distinction I'm found myself quite curious: How do Japanese people talk, and in doing so, think about, socioeconomic class? What terminology do they use? What aspect do they focus on (USA = income, UK = role)?
PS. Sorry if I deeply misunderstand what "working" and "middle" class refers to, british people whom may be reading this.