Udarnik

Agitprop poster by Vladimir Mayakovsky: "Hurry to join shock brigades!" – Do you want it? Then join. 1. Want to defeat cold? 2. Want to defeat hunger? 3. Want to eat? 4. Want to drink? Hurry, join the advanced exemplary labour group.

In the terminology of the Soviet Union, the Eastern Bloc, and other communist countries, an udarnik (/uːˈdɑːrnɪk/, plural udarniks or udarniki; Russian: уда́рник, IPA: [ʊˈdarnʲɪk]), also known in English as a shock worker or strike worker (collectively known as shock brigades or a shock labor team) is a high productivity worker. It derived from the expression "udarny trud" for "superproductive, enthusiastic labor".