This article explores the problem of ambiguity of the category “legal work in a commercial organization”. A well-founded, logically accurate conceptual-categorical apparatus is important not only from a scientific perspective, for achieving the practical effectiveness of such activity as well. The authors raise the question on the absence of legislative consolidation of this category. Analysis is conducted on the existing in legal doctrine approaches towards the concept of “legal work” and “legal work in a commercial organization”. The conducted analysis of legislation and legal doctrine on the subject matter allows concluding on the need for distinguishing a narrow and broad approaches towards definition of the concept “legal work in a commercial organization”. In a narrow sense, it is offered to views this concept as a competent legal activity carried out by the expert, legal adviser, or external lawyer for ensuring effective functionality of the mechanism of legal regulation and systematic receipt of profit. In a broad sense, this concept should be viewed as an actual legal work and the activity of all structural departments, under the supervision of legal service, legal adviser or other entity, who can render a competent legal aid. The authors suggest adopting a special federal law that would regulate legal work, obligating the commercial organizations to hire competent legal experts. This would correspond to the trend of professionalization of legal aid, increase the effectiveness of protecting the rights and legitimate interests of organizations, and thus reduce legal nihilism, improve the quality of justice, optimize the burden on public authorities, and ultimately, contribute to observance of the general legal principle of legitimacy in entrepreneurial activity.