I remember a story about Argentina popping up where supposedly quality was determined by how much time was spent on some job. If that story was an attempt at contradicting my statement above, then you misunderstood the statement above.
I do not state it is a direct correlation between hours worked. I said it was a store of value for labor performed. So, to clarify: the store of value does not quantify or qualify. One agreed on some money for a job. The job is done and the money transferred. The work you did once, now is "at rest" in the money to be exchanged for value of some sorts at a later date.