Sounds reasonable, but in practice (at least in Belgium), practice seems otherwise. If you want to make a big jump money wise, you have to switch jobs. That's

Sounds reasonable, but in practice (at least in Belgium), practice seems otherwise. If you want to make a big jump money wise, you have to switch jobs. That's what I see in practice. My theory is that people are reluctant to switch jobs and so companies count on that fact and pay less. And so to motivate someone to switch they need extra money.