If there are two or more joint contract-holders under an occupation contract, each joint contract-holder is fully liable to the landlord for the performance of every obligation owed to the landlord under the contract.

References in this Act to the contract-holder, except where otherwise provided, are to the joint contract-holders.

Subsection (2) applies even if the occupation contract is a tenancy and the leasehold estate is vested in one or more, but not all, of the joint contract-holders.