EU rules: If WX is such that return following an engine failure is impossible, nominating a tkof altn is mandatory. Within distance equivalent of 1 hr OEI CRZ speed in still air, standard landing minima figures apply, no need to degrade up one level.
This is the operator's rules, applicable to dispatch the A/C. No legal reasons to get ATC dragged into this, or put it into the flight plan. Only on the OFP it must be.
True or false?