Shift
Shift work is considered a general period encompassing the time spent performing work at the site and the time for rest between shifts.
The duration of shift work should not exceed one month. In exceptional cases, on certain objects, the employer may extend the duration of shift work up to three months taking into account the opinion of the elected body of the primary trade union organization in accordance with the procedure established by Article 372 of this Code for adoption of local regulatory acts.
Source: "Labor Code of the Russian Federation" dated December 30, 2001 No. 197-FZ (edition of December 3, 2012)