Manhours

All costs are labour costs (manhours) back down the line. Say you buy an apple from a shop, the cost of that apple includes the following:

Manhours for shop staff
Manhours for construction of the shop
Manhours for the materials that are used to construct the shop
Manhours of the farmer
Manhours of the construction of farm equipment
Manhours for the materials that are used to construct the farm equipment
Manhours of the distributer
Manhours of the construction of transport equipment
Manhours for the materials that are used to construct the transport equipment

In all but as simplified model society, it would be prohibitivelly complicated to calculate the total manhours for an item, but it is an interesting thought experiment.

In a totally equal society would it be possible to have a currency based on manhours?