56Secondly, the duplication of penalties of a criminal nature requires rules allowing it to be guaranteed that the severity of the sum of all of the penalties imposed corresponds with the seriousness of the offence concerned, that requirement resulting not only from Article 52(1) of the Charter, but also from the principle of proportionality of penalties set out in Article 49(3) thereof. Those rules must provide for the obligation for the competent authorities, in the event of the imposition of a second penalty, to ensure that the severity of the sum of all of the penalties imposed does not exceed the seriousness of the offence identified.
Source: EUR-Lex, © European Union, 1998-2026. Reuse authorised under Decision 2011/833/EU.