USS Sloga) is a trade union and a left-wing political organisation in Serbia.

[2][3] USS Sloga later organised media campaigns regarding workers' conditions, and had also criticised the economic model that has been pursued by Aleksandar Vučić.

[4] It participated as a political organisation in the 2014 parliamentary election as part of the Democratic Party (DS) coalition list.

[1][4] USS Sloga defines itself as "an independent democratic trade union organization of employees that they join for the purpose of representation and protection of their professional, labor, economic, social, cultural and other individual and collective interests".

In 2017, they had argued that increasing the minimal wage for 15% would not be enough to cover the costs of a minimum consumer basket.