Questione giuridica chiave
Whether the cantonal court correctly refused to reinstate the appeal period due to illness.
Decisione estratta
The illness did not constitute an excusable obstacle because the claimant remained objectively and subjectively able to act himself or engage a third person in time.
Motivazione estratta
Reinstatement requires a sickness so severe that it prevents any timely procedural step or the instruction of another person. Here, by the last day of the deadline, the claimant could still have arranged filing through a helper; his condition was not shown to have destroyed all ability to act.