Kadrowiec is a free HR and payroll program created by the author of the popular VAT engineer program. The collective point of all the information in the program are payrolls, in which by means of payroll components (defined as mathematical expression) data are collected from practically any HR and payroll module. A set of functions used in payroll components allows you to download data as well as operations on the components or results themselves.

From the payroll, by means of properly defined types of components and options of the components themselves, aggregate information is saved to monthly and annual statements and posted to the financial-accounting programme. All software elements are fully definable, even export to the Płatnik program.