<p>Unfortunately, your question is not appropriate for this site.  It seems to be about statistics in the sense of baseball statistics, that is, some number that is pertinent to describing or understanding some phenomenon.  In the sense used on this site, <a href="https://en.wikipedia.org/wiki/Statistics" rel="nofollow noreferrer">statistics</a> has to do with <em>analyses</em> of data in the service of some goal.  The key distinction here is that you want to get an actual number, whereas this site is for people wanting to know what they should do with the numbers they already have.  </p>

<p>I don't know if there is any SE site that is appropriate for your question.  There is a site for people seeking data (<a href="https://opendata.stackexchange.com/">open data</a>) that might be able to help you find that information; there is also a site for questions about <a href="https://economics.stackexchange.com/">economics</a> that might have information to the extent that how much of the workforce in different industries would be what you call 'direct workers' might be a research topic in economics; similarly, there is a <a href="https://quant.stackexchange.com/">quantitative finance</a> site, and investors might care about the proportions of direct workers in different industries to help them make investment decisions; but I couldn't be confident any of those would think your question is a good fit.  Some [library / internet] 'shoe leather' research might be needed to track that information down.   </p>
