The tenant must occupy the premises for the purpose of a business.
There are two aspects to this (1) occupation and what this means in practice and (2) business and what this means in practice.
Occupation implies that there is a physical presence and control of the premises.
A tenant’s intention to occupy a business may satisfy the criteria. However, the tenant will only be entitled to a new lease if it is occupied. Therefore if a tenant vacates the premises, it must be determined whether the tenant is actually in occupation. If the tenant, for example, moves out of the premises for fitting out, likely, it will still be in occupation.
What if the tenant has sublet the premises?
If the tenant sublets all of the premises, it will lose the protection of the Act as it will not be deemed to be in occupation. If the tenant underlets part, the tenant will not be able to request a new tenancy of that part of the premises.
An undertenant can request a new lease directly from the head landlord if it satisfies the criteria in the Act.
What if the premises are deemed to be unusable?
Suppose the premises are damaged because access cannot be gained or the premises are unsafe. In that case, the tenant will still be deemed to be in occupation so long as the tenant has no control over the events causing the damage and the tenant communicates to the landlord that it intends to reoccupy.