In the US (I realize the article is about EU), salary information for a given individual is not public* and employers typically will not share it (when queried by a prospective employer, they will only confirm employment history - "yes, Bob worked here for 5 years as a developer").
Several states have implemented similar rules (CO and CA, IIRC). A job listing would typically list either a minimum salary or range for a position. "Senior Developer, $120,000-$150,000" or whatever.
Two upsides to this approach... First, an employee is not limited by their current salary - they can negotiate on their value. Second, it's widely accepted that women and minorities tend to be less aggressive salary negotiators. Those two things together, applied over a career, can make a massive reduction in lifetime earnings for employees.
* Government jobs are the big exception - you can search for most university salaries because most receive government funding. Same for local government offices.
Several states have implemented similar rules (CO and CA, IIRC). A job listing would typically list either a minimum salary or range for a position. "Senior Developer, $120,000-$150,000" or whatever.
Two upsides to this approach... First, an employee is not limited by their current salary - they can negotiate on their value. Second, it's widely accepted that women and minorities tend to be less aggressive salary negotiators. Those two things together, applied over a career, can make a massive reduction in lifetime earnings for employees.
* Government jobs are the big exception - you can search for most university salaries because most receive government funding. Same for local government offices.