If workers have to convert compensation into other instruments to preserve it, then some of the investment risk workers carry is carried for preservation rather than for enrichment.
The formal term I use for this is preservation-motivated investment. The intuitive shorthand, which practitioners recognize immediately and which I use sparingly, is the forced investor.
The shorthand is provocative, so let me define exactly what is and is not being claimed before anyone runs with it.
The claim is not that anyone compels a worker to buy equities. Workers can hold cash and deposits, and some do. It is not that investing exists because discretionary money exists; productive capital would need owners under any monetary arrangement. It is not that all investment risk is caused by inflation, that productive capital would become unnecessary under a different money, or that workers should hold money for forty years.
The claim is narrower than all of those. The modern worker's investment burden can be decomposed, at least conceptually, into two components with different motivations.
Growth-motivated investment: risk voluntarily accepted to increase future purchasing capacity through exposure to productive capital or other risk-bearing assets.
Preservation-motivated investment: risk, or instrument transformation, accepted because holding the payment medium itself, even in its safest interest-bearing forms, is not expected to reliably maintain purchasing capacity over the relevant horizon.
The decomposition asks only one question of any worker's portfolio. How much of this risk is accepted to move ahead, and how much merely to stand still?
The Objection That Makes the Concept Useful
A hostile financial economist should be allowed the objection this framing invites, because answering it is what turns the idea from rhetoric into something bounded.
Why should holding a liquid monetary instrument entitle anyone to a constant real claim on future production?
Capital has an opportunity cost. Productive investment earns a return because it defers consumption, bears risk, and finances something that produces. A worker who declines that risk and holds money is choosing liquidity and safety, and the price of that choice is the return foregone.
That objection is correct as far as it goes, and I concede it fully. Nobody is entitled to a real return for holding money.
The concession does not reach the claim, though, and the reason is worth being precise about.
The forced-investor decomposition is not an entitlement claim. It is a risk-accounting claim.
It observes that there is a floor to the market exposure a worker must accept for deferred compensation to arrive with its purchasing capacity intact. It observes that the floor's height is set by the real return on the safest monetary claims actually available to the worker, in the wrapper they actually hold. And it observes that whenever that real return is at or below zero, as it has been for extended periods in the long-run record, the floor sits above zero.
The worker who wishes only to stand still has to accept some risk in order to do it.
What matters for compensation is that the deferred portion of pay cannot then be preserved by inaction, and that the risk required to preserve it is a cost of the architecture. The worker bears it. No compensation statement reports it.
Reading the Risk Roster Again
The second paper's Assignment Test asks you to name every risk in an architecture and say who bears it. Read that roster through this decomposition and it separates.
Market, sequence, duration, manager, behavioral, fee, counterparty and valuation risk are all borne by the defined contribution participant. Some portion of each is the price of growth, and would be borne by any saver seeking to grow rather than merely hold.
Some portion is the price of exit from a medium that will not, unaided, hold.
A worker content to preserve, without growth, the purchasing capacity of what they were paid cannot do so by holding the pay. They have to enter markets, accept managers, pay fees, endure sequences, and manage their own behavior, all in service of an objective that a preserving medium would have met by inaction.
That is the preservation-motivated component. Forced not by any person, but by the architecture.
Keeping It Counterfactual, and Keeping It Honest
The framing is counterfactual and it has to stay that way, or it drifts into a claim I cannot support.
The question is not why a given worker invests, which has many causes. It is how the worker's required preservation behavior would differ under an otherwise comparable monetary environment in which the safest accessible monetary claims reliably maintained liability-relative purchasing capacity.
Preservation-motivated investment is the difference between the observed preservation requirement and that counterfactual. It is not a claim that retirement investing is caused by monetary decay.
Its size is empirical and unknown. It varies with horizon, inflation regime, taxes, interest rates, the instruments actually available, and the liability itself. The claim is that it exists and can be reasoned about. It is not a claim that it is large, and anyone who wants to use this concept to argue that most retirement investing is monetary in origin is using it past its evidence.
The decomposition does produce one observable implication, and I state it as a research hypothesis rather than a result. Holding plan structure, income, age and horizon constant, workers facing lower real returns on the safest accessible preservation instruments should require greater exposure to risk-bearing assets to achieve the same liability-relative preservation target, and should exhibit it where the architecture permits.
That is testable. I have not tested it.
Mainstream Finance Already Concedes the Harder Half
The point sharpens once you notice that mainstream finance does not regard the standard remedy as riskless even in the long run.
Bodie's argument that stocks are not safe in the long run, that the cost of insuring against shortfall rises rather than falls with horizon, and Samuelson's demonstration that time diversification is a fallacy, are foundational results rather than heterodox ones.
They mean that the worker who converts pay into equities in order to preserve it has exchanged one uncertainty for another rather than resolved it.
The exchange is usually a good one. But it is an exchange, and the worker's decision to enter the market for it cannot be treated as wholly independent of the monetary architecture in which preservation occurs.
Workers still choose whether to save, how much, in what instruments, and with how much risk. The claim is not coercion. The claim is that the architecture alters the minimum transformation required to pursue preservation at all.
What a Preserving Medium Would Not Change
One boundary, because the concept collapses without it.
A preserving medium would not make investment unnecessary. Growth would still require productive assets. Pooling would still require promises. The floor tranche would still want guarantees. Longevity, disability, sequence risk and behavior would all still be there.
What a preserving medium would change is the amount of market exposure a worker has to accept simply to stand still.
The forced investor is the worker who cannot stand still by holding what they were paid.
And that concept survives only if the claim is true of the safest monetary claims actually available to workers, not merely of currency sitting in a drawer. Nobody preserves forty years of retirement savings in banknotes, and an argument built against that strawman would deserve to lose.
So the next article asks the question properly. Deposits pay interest. Treasury bills exist. Short-duration government bonds exist. Inflation-indexed government securities exist, and they are very good at the thing they do.
Does interest solve it?