For the purposes of crediting contributions under article 58 in respect of days of duly notified incapacity for work and of proven unemployment, a person shall -

(a) in respect of periods of incapacity for work, furnish to the Minister notice of such incapacity and any evidence required in relation thereto before the beginning of the benefit year immediately following the contribution year in which the week in question falls or before such later date as the Minister may in any particular case determine, and

(b) in respect of periods of unemployment, furnish to the Minister such evidence as he may require.