Only natural persons (ie, individuals) who have created works may enjoy the status of an author, even where an author is an employee. However, there are some presumptions, such as those regarding the assignment of economic rights in computer programs, that automatically favor employers.
The Copyright Law includes a rebuttable presumption of authorship; the author is presumed to be the person under whose name the work is being disclosed.
Persons collaborating directly on the creation of a work become co-authors. Their copyright is indivisible. In these situations, the exercise of the right of co-authors is governed by agreement. Failing such agreement, no author may exercise this right in isolation, unless a court decision provides otherwise in case of a dispute. In a situation in which the contributions of the authors may be individually identified, those authors share the right to exploit their contribution in isolation provided that such exploitation is not done together with the contribution of another co-author and does not harm the joint work.
The economic rights of the author shall be freely assignable and transferable, in whole or in part, in accordance with the provisions of the Civil Code. In particular, they may be the subject of alienation or of an ordinary or exclusive license.
A specificity of Luxembourg copyright law is that it also allows the author to assign or transfer, in whole or in part, their moral rights to the extent that it is not prejudicial to their honor or reputation.