There is a distinct difference between a free market system in which "democratic elements" sift through the various energies it produces for the most efficient result - versus - and a participatory system in which the worker loses the initiative to find the most efficient result (for he has a monopoly on the production, and decision making abilities) because frankly: he has a predisposition towards his own creation.
Namely, a factory worker in a free market system has only one consideration: value. In any other system, he has to take the considerations of a myriad of other factors that inevitably reduce the efficiency of the factory by making it - to be blunt - a popularity contest.
There is no "free market" for you to speak of; the mixed nature of the capitalist economy is a permanent reality for that system. Capitalism will naturally have a propensity toward inefficiency because of the sufficiently high equilibrium unemployment rate necessary to maintain internal firm efficiency and ensure effort extraction. Since unemployment is a form of static inefficiency, we're left with a paradoxical state of affairs in that external inefficiency is a necessary condition of internal efficiency in the capitalist economy.
The criticism that full employment is needed, regardless of cost, and a free market doesn't provide - in of itself holds no water. The Free Market shall, and should not, employ people against their will. For if employed - if they are given financial capital for a service (such as voting for the 'right' candidate) - they would undoubtedly produce a more inefficient system that is, in laymen terms, referred to as a "overheating" economic system. In which too many units of currency, or an approximation such as fiat legal tender, is 'chasing' to few goods.
Indeed, to have a medium of unemployment, is not - economically proven - to be bad in of itself. Undoubtedly, unwanted employment; the actual inability to possess any job of any kind, is a poor situation. Yet that sort of position is practically non-existent; most unemployment is voluntary to some degree or another.
For example in a hypothetical situation: you are, for lack of a better term, 'fired' from your job. Yet at any time, if you so desire, work is available simply by accepting lower nominal wage rates. Though many do not do this, thus unemployment. Literally, the best and most efficient use of a useless good. Which is, to be radical, a over educated bum who wants more money then he should get.
This all aside, what is your actual - technical - definition of one unemployed?