Coffee breaks, essentially.

From the first google result: "Fika is a common practice at workplaces in Sweden and Finland where it constitutes at least one break during a normal workday. Often, two fikor are taken in a day at around 9:00 in the morning and 3:00 in the afternoon. The work fika is an important social event where employees can gather and socialize to discuss private and professional matters. It is not uncommon for management to join employees and to some extent it can even be considered impolite not to join one's colleagues at fika. The practice is not limited to any specific sector of the labor market and is considered normal practice even in government administration."