The purpose of this book is to discuss the main provisions of the Rome I Regulation relating to employment contracts with an international element. It outlines two competing objectives of the regulation, namely, to increase legal certainty and predictability of the law applicable to the contract and to ensure the protection of the employee as the party to a contract viewed as being weaker. It answers the questions concerning the scope of the autonomy of the parties making the choice of law, as well as the mode of indication of the applicable law in the absence of choice. It is clear from the considerations in the book that the solution adopted for individual employment contracts expresses the will of the authors of the regulation, to ensure, first and foremost, the protection of the worker as the weaker party to a contract.