The principle of proportionality requires that, when choosing between two equally effective remedies, NCAs should choose the remedy that is least burdensome for the undertaking.
Ceanglaítear le prionsabal na comhréireachta, i gcás ina bhfuil rogha le déanamh idir dhá leigheas atá chomh héifeachtach céanna, ba cheart do ÚINanna an leigheas is lú anró don ghnóthas a roghnú.