
The author analyzes the applicability of certain provisions on in solidum solidarity. The doctrinal dispute that has emerged in this sphere, arising from thelegitimacy of the application of in solidum solidarity provisions, measures up against the now well-established pragmatism of the judicature. The author
presents a two-fold view of the applicability of the regulations in question. She offers the doctrinal critical view and compares it with her point of view, supported by the achievements of other authors and jurisprudence on the possibility and necessity of applying in solidum solidarity. Author's assumption is based on the fact that, despite the lack of regulation of such solidarity within the Polish legal order, its actual occurrence in civil law relations is undeniable.