The labour component of income earned by the self-employed is not separately identifiable, as such it is assumed that the self-employed and employees earn the same average hourly compensation for their labour, with total labour compensation calculated as compensation of employees multiplied by the number of hours worked by all persons (employees and self-employed), divided by the hours worked by employees. For Chile, Japan, Korea and the United States, as total hours worked by main ISIC Rev.4 economic activity are not available, the number of persons employed by sector is used, and so, Figure 5.6, Figure 5.7 and Figure 5.8 necessarily assume that the average labour compensation of the self-employed is the same as that of employees for these countries.
Measures of value-added follow the definition in the 2008 SNA. Of note in this regard is the impact that relocations of headquarters or indeed intellectual property can have on recorded measures of economic activity. The latter in particular can be an important source of observed decoupling and so some care is necessarily needed in interpreting movements across countries and their implications on material well-being, as is the case in Ireland for example, where GDP grew by 26% in 2015.
Real measures of compensation can be calculated from the a producer’s perspective, where real average hourly labour compensation growth is deflated using the same price index as that used for value added, or from a worker’s perspective, where compensation is adjusted for general price inflation (in this case the consumer price index, CPI), which is a better reflection of the real purchasing power of households and so more appropriate for analyses of material well-being and inequalities (OECD, 2017).
Information on data for Israel: http://dx.doi.org/10.1787/888932315602.