Benefits are a much smaller part of the package. Health coverage, for example, is nationally provided. For most of my employers, the main benefits would be vacation (which would be pro-rata), pension (ditto), and sick leave (effectively ditto, as it pays out based on actual salary). There are some much smaller fringe benefits (gym discounts, say) which would be given regardless of hours worked, but I'm not sure that would make a material difference.

For high-end jobs you might get private health coverage (or, under earlier tax regimes, a company car). I'm not sure how they are normally handled.