In response to Turkey downing a Russian military jet near the Syrian border in November, the Kremlin has imposed a suite of unilateral sanctions against Turkey.
A statement outlining the scope of the sanctions imposed under President Putin's Executive Order on 28 November 2015 is available here (http://en.kremlin.ru/events/president/news/50805).
Among other things, the sanctions place bans and limitations on the import into the Russian Federation of certain goods originating from Turkey; prohibit employment of Turkish nationals by Russian companies as of 1 January 2016 (unless they were already employed or the Russian employer is included on a special list to be maintained by the Russian Government); and restrict Turkish companies from performing certain work and services in Russia. Other measures include suspension of visa-free travel to Russia for Turkish citizens commencing 1 January 2016 (except for those who have residence permits and diplomats and their families) and a prohibition on travel agents selling holiday packages to Turkey.
Russia's sanctions against Turkey are likely to remain in place, in one form or another, for some time depending on how the geopolitics between the two countries play out over coming months. Although Russian officials have indicated that some sanctions, such as bans on food imports, may fall away sooner than others, such as visa restrictions.