This release consists of a standardization of 281,355 different occupational titles found in the sources used by the HSN till the 1st of January 2020 and the coding of the standardized occupations in the HISCO, HISCLASS, OCC1950, HISCAM and SOCPO classifications. HSN stands for the Historical Sample of the Netherlands which forms a database consisting of over 85,000 life courses and which organizes adjacent projects with more life course data like the LINKS project (see www.iisg.nl\hsn). The coding process of the occupational titles followed three stages: 1) All titles were standardized into a uniform spelling, 2) The resulting standards were provided with a HISCO code, 3) On the basis of the HISCO code other classifications such as HISCLASS and HISCAM were added to the standards. To be cited as: Kees Mandemakers, Jan Hornix, Rick J. Mourits, Sanne Muurling, Corinne Boter, Ingrid K. van Dijk, Ineke Maas, Bart Van de Putte, Richard L. Zijdeman, Paul Lambert, Marco H.D. van Leeuwen, Frans van Poppel and Andrew Miles, HSN standardized, HISCO-coded and classified occupational titles, HSN release 2020.02 (IISG Amsterdam 2020).