The Finnish legislation concerning conscription was completely overhauled in 2007. The new legislation which was approved by the Parliament of Finland came into force 1 January 2008. No changes were made to the service periods, which are given in Conscription Act (452/1950), 5§ and in the new Conscription Act (1438/2007), 37§. (Both laws in Finnish)
The reserve obligation is listed in the §§6–7 of the Conscription Act (452/1950) ((in Finnish)) and in §§49–50 of the new Conscription Act (1438/2007) ((in Finnish). The old Conscription Act mandates the activation of the reserve only in case of full or partial mobilization (§10). The new Conscription Act allows for selective activation of reservists even in situations which do not require even partial mobilization (§§78–89).
Asevelvollisen pitkä marssiArchived 2008-05-06 at the Wayback Machine Ruotuväki 9/2004. Retrieved 11-19-2007. (in Finnish)The cited source includes a very good overview of the system, paraphrased here.
Hyppönen, H. (2015) Muutos on mahdollisuus – näkymiä reservin koulutuksestaArchived 2016-01-19 at the Wayback Machine. In Ylisipola, J (ed.) Reservin koulutus ja vapaaehtoinen
maanpuolustuskoulutus: VELVOLLISUUS, VAPAAEHTOISUUS, OMATOIMISUUS: Puolustusvoimien koulutustoimialan vuosiseminaari 2015. Finnish Defence Command, Training Department. ISBN978-951-25-2707-6. Retrieved 2015-12-28.(in Finnish)
Hyppönen, H. (2015) Muutos on mahdollisuus – näkymiä reservin koulutuksestaArchived 2016-01-19 at the Wayback Machine. In Ylisipola, J (ed.) Reservin koulutus ja vapaaehtoinen
maanpuolustuskoulutus: VELVOLLISUUS, VAPAAEHTOISUUS, OMATOIMISUUS: Puolustusvoimien koulutustoimialan vuosiseminaari 2015. Finnish Defence Command, Training Department. ISBN978-951-25-2707-6. Retrieved 2015-12-28.(in Finnish)
HallintoArchived 2016-02-16 at the Wayback Machine. Finnish National Defence Training Association. Retrieved 2015-12-28. (in Finnish)
Asevelvollisen pitkä marssiArchived 2008-05-06 at the Wayback Machine Ruotuväki 9/2004. Retrieved 11-19-2007. (in Finnish)The cited source includes a very good overview of the system, paraphrased here.