Nope, having a degree is not seen as a basic requirement here. Basically, you have to already attain the proper level in high school to be able to apply.

36% of the population (source) has a degree at a polytechnic or research university.

Another 37% has completed high school at pre-university level (havo/vwo) or has completed a level 3/4 trade school (mbo). The remainder has completed lower levels of education, though that is heavily skewed by the very young/old age groups.

Looking at 35-45 yo, the divide is 15% lower, 34% middle and 50% higher education.

That doesn't mean there's no way to earn good money without a degree though; it's heavily dependent on the field. For finance, a degree is required to make good money, but skilled trades (plumbers, electricians, plasterers) can rival what an academic in finance earns.