In addition to facilitating migration across the Nordic borders, the common Nordic labour market also sets out to facilitate cross-border commuting. The extent of cross-border commuting between the Nordic countries and trends over time are difficult to assess since comparable and relevant long data series are not available.
Over the years, however, various projects have attempted to fill that gap and have produced cross-border commuting statistics for specific periods of time. Those include, for example, the Nordic Map of Commuting, several editions of which were published between 2004 and 2013 (Nordisk Pendlingskarta, see, for example, Nordic Council of Ministers, 2005 and 2013). The project involved a collaboration between the national statistical institutes of the four big Nordic countries and made it possible to identify Nordic citizens who had their regular residence in one Nordic country but received income from an employer in another Nordic country. It showed that a fairly small group of around 25,400 people commuted to another Nordic country in 2001. In 2009, it was estimated that around 70,000 engaged in cross-border commuting, with men more likely to commute than women (Nordic Council of Ministers, 2013; Hanaeus, 2013). Despite the total number of commuters being relatively modest, such commuting has affected many municipalities across the Nordic countries and had an important impact in some of them in terms of meeting labour demands (Nordic Council of Ministers, 2005).
More recently, a Nordic project collected and harmonised Nordic commuting data for the years 2015-2018, including persons who regularly cross country borders to go to their workplace and digital commuters who do most of their work in their place of residence (Brun et al., 2021). Approximately 51,200 people worked in another Nordic country during this period, corresponding to 0.2% of the working age population. Swedes were particularly likely to commute, with Denmark and Norway being the preferred destinations. During the studied period of 2015 to 2017, commuting numbers declined markedly. That may be attributed to various factors, including declining levels of youth unemployment in Sweden and a weaker Norwegian currency, which reduced incentives for young Swedes to look for a job in Norway (Nordic Council of Ministers, 2021).
The harmonised Nordic commuting data also suggest that commuting plays a differing role for various regions and municipalities (Map 2). For example, in some regions in southern and central Sweden and in Åland, over one percent of the total workforce commuted to a job in another Nordic country in the period 2015-2018, while the equivalent percentage is much lower in large parts of Norway and Finland. In some municipalities, commuters may make a strong contribution to the local labour market, with cross-border workers representing over 10% of the working age population (Nordic Council of Ministers, 2021).