1) The value of employees can be measured individually. Say you've got 100 assembly line workers. What's the value of losing an assembly line worker? Almost nothing. What's the value of losing all the assembly line workers, divided by 100? Pretty big number! In the U.S. we tend to define "value generated by an employee" in terms of "marginal cost of replacing the worker" but that's arbitrary.
2) That renumeration should be tied to value generated by the individual employee.
The ratios vary. I recall one Andersen (now Accenture) partner telling me that he brought in about $10M of business. For a Big-4 (or is it Big-3?) accounting firm, the revenue per partner was $2.66 million. [1]
Law firms are notorious for PPP. [2]
[1] "Total firm revenue was $22 billion and global partnership was 8,280 partners giving a revenue per partner ratio of $2.66 million."
[2] http://en.wikipedia.org/wiki/List_of_law_firms_by_profits_pe...
In Switzerland the avg net income[1] is about 4.000 EUR (~ 6.000 USD) which is sky-high compared to other European countries. Probably the possibility to become rich some day is what drives most of these voters to say 'no'.
[1] http://en.wikipedia.org/wiki/List_of_countries_in_Europe_by_...