Sick Leave which is more favourable than the Holidays Act

The Employee shall be entitled to sick leave as set out in this clause. This clause is in substitution for and not in addition to the entitlements set out in the Holidays Act:

(i)     The Employee shall be entitled to [insert days - minimum 5] days sick leave rather than the 5 days referred to in section 65 of the Holidays Act.
(ii)    The employee’s entitlement to sick leave shall commence from the first day of their employment.
(iii)   The Employee may accumulate up to [insert days - minimum 20] days sick leave from year to year.