Workers are not slaves, it entirely depends on where you work and if the welfare of the state are prioritized by the company. Furthermore, there are white collar jobs workers with good pay and not so jobs required you tho go to the office everyday. I've had a job as the ICT manager of a company and I'm only required to be at the office twice weekly(Mondays and any other day I'm needed).

When you can call white collar jobs slavery is when the remissions is not comparable with to the job requirements and staffs are undervalued and, ill treated or their salaries delayed consistently.