May 4, Latvia celebrates the Day of restoration of independence of the Republic of Latvia. On this day in 1990 the Supreme Council adopted the Declaration on the restoration of independence, and defined a transition period to achieve real independence.

In accordance with the law "On labour" (article 135) working day before the holiday shortened to 1 hour. This standard mandatory for state and municipal institutions but private enterprises can ignore it, or, conversely, to establish this day more preferential treatment.