Article 27 of Copyright and Related Rights Law

If a work is created for the account of another person, the copyright shall belong to the author who created it, unless otherwise agreed in writing. Without prejudice to the preceding paragraph, if an employee creates, during his employment, a work related to the employer’s activities or business, upon a direct or indirect commission from the employer, or uses, in arriving at the creation of that work, the employer’s expertise, information, tools, machinery or materials placed at his disposal, the copyright shall belong to the employer, with due regard to the employee’s intellectual effort, unless otherwise agreed in writing. The copyright shall belong to the employee if the work created by him is unrelated to the employer’s business and the employee did not use the employer’s expertise, information, tools or raw materials in arriving at that creation, unless otherwise agreed in writing.