(a)

in regard to employment contracts and employment relationships, exclusively by the law of the Member State applicable to the employment contract or employment relationship;

(b)

in regard to contracts conferring the right to make use of or acquire immovable property, exclusively by the law of the Member State where the immovable property is situated; and

(c)

in regard to rights of the insurance undertaking with respect to immovable property, a ship or an aircraft subject to registration in a public register, exclusively by the law of the Member State under the authority of which the register is kept.