Labour productivity refers to the value added per hour worked. In advanced economies, productivity growth is the most important source of economic growth over the longer term. Previous research has shown that productivity is structurally higher in large firms (those with 250 employees or more) than in medium-sized firms (50 to 250 employees). It is the lowest in small firms (5 to 50 employees). Since 2020, productivity has also been increasing more rapidly in large firms than in small and medium-sized firms.