Inputs into the social reproduction function are of three types: time, commodities and infrastructure.” They are combined to produce human capacities, which in the short term refer to the daily maintenance of the labourforce and in the longer term to investments in both quality and quantity. Even where the household receives in-kind services that it does not directly pay for, these services are paid for by others (e.g., governments or non-governmental organizations) and hence are treated as commodities in the model.