The Shadow Price of Time

Becker's 1965 paper put a price on time. Not a wage — a shadow price, the true cost of producing something when every input is accounted for, including the one economics had treated as invisible: the hours of a human life. Consumption takes time. Reading a book requires not just the purchase price but the hours spent reading. Cooking a meal requires not just ingredients but preparation time. Every act of consumption is simultaneously an act of time expenditure, and time, unlike money, cannot be earned, saved, or borrowed. It can only be spent. The true cost of any activity is the sum of its market cost and the opportunity cost of the time it consumes. The model predicted that as wages rise, individuals substitute market goods for time-intensive home production. They eat out. They hire cleaners. They purchase convenience. The data matched with the quiet consistency characterizing all