This is a pretty naive approach in most cases. There are tons of companies (I'd argue most) where firstly there's no "next big salary" to be received (it's a s

This is a pretty naive approach in most cases. There are tons of companies (I'd argue most) where firstly there's no "next big salary" to be received (it's a slooow upwards trajectory) and secondly promotions are not based on who works harder than everyone else.