No, I didn't intend the irony — I didn't know it was common for employers to formally request that salaries be kept confidential.
However, even if intra-company sharing is discouraged / disallowed, it is still common for job-seekers to know what salary they could expect based on their skill level, other offers of employment, sites like glassdoor, etc.
Perhaps more accurately, you might say journal subscription NDAs are like the only employer in the world threatening to fire you if you ever posted your salary to glassdoor or shared it with a friend who's just starting his career what he might expect to make.
However, even if intra-company sharing is discouraged / disallowed, it is still common for job-seekers to know what salary they could expect based on their skill level, other offers of employment, sites like glassdoor, etc.
Perhaps more accurately, you might say journal subscription NDAs are like the only employer in the world threatening to fire you if you ever posted your salary to glassdoor or shared it with a friend who's just starting his career what he might expect to make.