Near the outset enrichment (speaking of her own sister) employs the term 'wage slave' what does she mean by this?

This means people who earn low wages and are at the mercy of corporate authorities. They have no chance of getting ahead or forging something new.

"Wage slave" is defined as though who work for "minimum wage" which at the time of publication was $7.00 per hour, and how they are unable to support themselves without taking on multiple jobs.