Judgment of the Court (Sixth Chamber) of 12 September 2019.#Zoran Maksimovic and Others v Bezirkshauptmannschaft Murtal and Finanzpolizei.#Requests for a preliminary ruling from the Landesverwaltungsgericht Steiermark.#References for a preliminary ruling — Article 56 TFEU — Freedom to provide services — Posting of workers — Retention and translation of records of wages — Work permit — Penalties — Proportionality — Fines of a minimum predefined amount — Cumulative — No upper limit — Court costs — Custodial sentence in lieu of a fine.#Joined Cases C-64/18, C-140/18, C-146/18 and C-148/18.