In general, the Law provides for only two cases of internship:
For the purpose of gaining experience in the performance of professional tasks and duties, improving professional knowledge, skills and abilities, studying and assimilating new technologies, techniques, acquiring additional competencies, applicants of professional (professional-technical), professional pre-higher, higher education who have obtained profession (qualification) according to the educational and qualification level of a skilled worker, specialty according to the educational and qualification level of a junior specialist, educational and professional degree of a professional junior bachelor, degrees of higher education of a junior bachelor or bachelor and continue to get an education at the next level of education - this is stated in the article 29 [of the above-mentioned law] (https://zakon.rada.gov.ua/laws/show/5067-17#n322).
With the assistance of the State Employment Service of Ukraine, registered unemployed citizens can undergo vocational training at the expense of the funds of the Mandatory State Social Insurance Fund of Ukraine in case of unemployment - Article 35 [of the Law] (https://zakon.rada.gov.ua/ laws/show/5067-17#n322).
In the first case, an agreement on the internship of higher education students and students of vocational and technical educational institutions, approved by a resolution of the CMU dated January 16, 2013 No. 20.
In the second - the contract on vocational training of the unemployed in accordance with Order dated 05/31/2013 No. 318/655.
** In all other cases, the employer is obliged to register the employee for work in accordance with the established procedure - from the first day of his employment.**
The only thing is that, in order to check the employee's suitability for the work assigned to him, the manager can set a test. According to Art. 26 KZpP the probation condition must be reflected in the order (order) on hiring this employee. During the trial period, such employees are subject to all the requirements of labor legislation.