Multifactor productivity (MFP) is an estimate of the overall efficiency with which inputs are used in the production process. It is calculated as a residual, using a growth accounting framework developed by Solow (1957[1]). This framework enables the decomposition of changes in economic output – in this case gross value added (GVA) – into contributions from changes in labour and capital inputs, and a residual known as MFP. More information on its derivation can be found in OECD (2025[2]).
Being a residual, changes in MFP reflect a mix of factors such as technological change, changes in capacity utilisation or economies of scale, or measurement errors. MFP is often associated with technological progress. Innovations, such as the use of Information and Communication Technology in production, alongside complementary assets like organisational and human capital, enables a more efficient production process (Bajgar, Criscuolo and Timmis, 2021[3]; André and Gal, 2024[4]). For instance, the adoption of computers and the expansion of the internet are considered as a key driver of MFP growth in OECD countries during the period from the mid-1990s to the early 2000s (Kretschmer, 2012[5]; Cette, Devillard and Spiezia, 2020[6]).
MFP estimates may also capture measurement errors and are particularly sensitive to how input and output volumes are measured. For instance, inaccuracies in measuring input volumes can arise when differences in input quality are not accounted for, or when various types of investment assets are not properly distinguished (Pionnier, Zinni and Baret, 2023[7]). Similarly, measuring output volumes presents challenges – especially when related to households, the non-market sector, and the informal economy – where gauging output values is often difficult (OECD/APO, 2022[8]).
MFP growth can also reflect cyclical fluctuations in the economy, and it has often been found to be pro-cyclical, i.e. declining during economic downturns and rising during expansions. This pattern is partly due to unmeasured variations in the utilisation of labour and capital over the business cycle (OECD, 2015[9]). Since adjusting inputs can be costly, firms often respond to short-term changes in demand by altering the intensity of use of existing resources – for instance, by hoarding labour during downturns or underutilising capital without immediately reducing capacity. Hence, adjusting MFP estimates to account for these cyclical effects enhances their usefulness by isolating the structural component of productivity growth, including technological progress (Fernald, 2014[10]; Martin and Jones, 2023[11]; Comin et al., 2025[12]) and Chapter 8 on cyclical adjustment of MFP).