The phrase "overriding reason" means having a more important or significant motive or cause that takes precedence over other reasons or considerations. Full definition
Since the vast wind turbine arrays produce a scant amount of power, at times when it is not in demand, or too much of it so that the existing grid can not accommodate it causing some of the wind plants to shut down and dump the electricity produced, there must be some other overriding reason for the increasing proliferation of «wind farms» both on - shore and off - shore. (masterresource.org)
The scheduling of that new period of annual leave, corresponding to the duration of the overlap between the period of annual leave originally scheduled and the sick leave, was subject to the rules and procedures of national law which were applicable to the scheduling of workers» leave, taking into account the various interests involved, including overriding reasons relating to the interests of the undertaking. (newlawjournal.co.uk)
Any restriction of this freedom may only be justified on the basis of overriding reasons in the public interest. (europeanlawblog.eu)