Only some quick thoughts to offer I'm afraid.
Sales and marketing is an absolutely massive resource hog. The drug industry for example, spends twice as much in a year on marketing as they spend on research. An enormous amount of labour in industries that actually provide necessary services (e.g. water, electricity etc.) is spent on billing, accounting, etc. While there will have to be some form of tracking resources and organising allocation of them in a communist society it would certainly take on a different form.
Of course, the biggest monster of them all is the "defence" industry. The war machine has become a bloated monstrosity with vast resources being poured into it. In the first Gulf War they dropped more bomb tonnage on Iraq than were used in the entire 2nd World War!
The war industry is closely connected with state in general with its armies of police, intelligence agencies, social services, tax collectors, etc.
) in the form of 'labour' necessary for the new social structures, e.g. no bureaucrats, but workers' councils instead. it's a very useful thing to be researching though ...


Hi Folks
I am interested in gathering data and research material on the extent of structural waste in capitalism. By that I mean the kind of occupations/work which are socially useless in themselves in the sense that they do not contribute to human welfare in any meaningful sense (e.g. the banking system) but are neverthless necessary to the operation of a capitalist market economy. In other words they arise purely from the systemic needs of capitalism itself as it has evolved over time...
Most estimates Ive come across seem to be pitched at around 50-60% of total labour input in the formal sector of developed economies - although I have come across considerably higher estimates (Marshall McLuhan, if I remember rightly, once offered a figure of over 90% which I think is a gross overestimate)
One can only get a real glimpse of the true extent of capitalism's structural waste from the perspective of a moneyless communist society in which production is directly for use and not for sale on a market. However, there is precious little literature on the subject. I have some stuff on the phenomenon of "tertiarisation" - the growth of the services sector - and some old pamphlets or articles on the subject from Solidarity and the SPGB e.g. their rather useful little pamphlet "Socialism as a Practical Alternative" But there doesnt seem to be much detailed research into this topic. This is a pity because one of the most enduring myths that help to sustain the status quo is precisely that markets ensure the efficient allocation of resources (the so called economic calculation argument which can be demolished on other grounds besides this)
Any help - and references - would be much appreciated
Cheers
Robin