CZ,
We do have a 500hr rule under JARs. The reference is
JAR-OPS 1, page 1-N-3 (page 129 of the linked document), rule 1.960:
(a) An operator shall ensure that:
(1) A Commercial Pilot Licence (CPL) holder does not operate as a commander of an aeroplane certified in the Aeroplane Flight Manual for single pilot operations unless:
(i) When conducting passenger carrying operations under Visual Flight Rules (VFR) outside a radius of 50nm from an aerodrom of departure, the pilot has a minimum of 500 hours total flight time on aeroplanes or holds a valid Instrument Rating
FFF
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