Worked example 10 — Reading a trade cycle through its phases and indicators

A student can name the four phases and still be unable to say, given a set of indicators, which phase an economy is in. That identification is what the topic is for, and it is what makes the difference between a description and an analysis. This example does the identification, and then draws out the two consequences that matter to a lawyer: why unemployment is the wrong indicator to watch, and why so much economic legislation is emergency legislation.

What a cycle is. Business is never steady. This cyclical movement, both upwards and downwards, is the trade cycle — the business cycle and the trade cycle are the same thing. It is a wave-like movement recurring in a regular manner.

Keynes's definition, which is the one to quote: the trade cycle is composed of periods of good trade characterised by rising price and low unemployment percentage, alternating with periods of bad trade characterised by falling price and high unemployment percentage.

The four characteristics.

1. Wave-like and recurrent — the fluctuations recur; they are not one-off shocks.
2. Four phases, not two — expansion, recession, contraction, and revival or recovery.
3. Not symmetrical. The movement from peak to trough and again from trough to peak is not symmetrical: according to Keynes the prosperity phase comes to an end fast while the dip is gradual and slow. A boom collapses; a recovery crawls.
4. Self-generating. Every phase carries the germs of the next — expansion has the germs of the recession within it. This is why the cycle repeats without needing an external cause each time.

The four phases, by turning point: expansion lies between the trough and the peak; peak is the month in which expansion transitions into contraction; contraction starts at the peak and ends at the trough; trough is the month when the economy transitions from contraction back to expansion. Peak and trough are single turning points, not periods.

A note on the two vocabularies, because both appear in Indian question papers. Prosperity or boom corresponds to the upper part of expansion; recession is the early part of contraction; depression is a deep and prolonged contraction around the trough; recovery or revival is early expansion. Expansion–recession–contraction–revival and expansion–peak–contraction–trough describe the same wave, one by periods and one by turning points. When the four phases are severe they are also called the boom and bust cycle.

Benchmark values for a healthy expansion: GDP growth in a 2 to 3 per cent range, unemployment at its natural rate of about 4.5 to 5.0 per cent, inflation near a 2 per cent target, and the stock market in a bull market. A well-managed economy can remain in expansion for years — the so-called Goldilocks economy.

These numeric benchmarks are those of the United States cycle-dating literature, not India's. The Indian equivalents are deferred to Module 3. Use the benchmarks as an illustration of how a phase is identified; never present 2 to 3 per cent growth or 4.5 to 5.0 per cent unemployment as an Indian norm.

Overheating is what the end of an expansion looks like: growth runs above the healthy range, inflation rises and may reach double digits, and investors fall into a state of irrational exuberance, creating asset bubbles.

The eight quarters below are invented for this exercise. They are not data.

| Quarter | GDP growth | Inflation | Unemployment | Equity market | Phase | |---|---|---|---|---|---| | Q1 | 2.4 | 2.1 | 4.8 | rising | Expansion — every indicator inside the healthy range | | Q2 | 3.0 | 2.4 | 4.6 | rising strongly | Expansion, late | | Q3 | 4.6 | 6.8 | 4.4 | rising sharply, new highs | Overheating — growth above the range, inflation climbing, exuberance | | Q4 | 1.1 | 7.2 | 4.5 | turning down | The peak lies in this quarter | | Q5 | –0.7 | 5.0 | 4.9 | falling, bear market | Contraction, and growth is negative, so a recession | | Q6 | –1.4 | 3.1 | 6.3 | falling | Contraction deepening; unemployment now moving | | Q7 | –0.2 | 2.6 | 7.1 | steadying | Late contraction; unemployment still rising | | Q8 | 0.9 | 2.4 | 7.0 | recovering | The trough lay in Q7; this is early revival |

Four things to read off it, each of which is an examination point.

(a) Growth turns before unemployment does. Growth goes negative in Q5, but unemployment barely moves until Q6 and peaks in Q7 — after growth has turned back up. Unemployment is a lagging indicator: mass layoffs make headline news and the rate begins to rise, but not until towards the end of the contraction, because businesses wait to hire new workers until they are sure the recession is over.

That is why an economy can be recovering while unemployment is still worsening, and why a government reading unemployment alone will always act late.

(b) The asymmetry is visible. Growth fell from 4.6 to –0.7 in two quarters, and came back from –1.4 to 0.9 in two — but the level is nowhere near restored. The prosperity phase came to an end fast; the dip is gradual and slow.

(c) Recession has a definition. Economic growth weakens through contraction, and when growth turns negative, that is what economists call a recession. Contraction is the phase; recession is the condition of negative growth within it.

(d) Peak and trough are dated afterwards. Q4 contains the peak and Q7 the trough — but nobody could say so at the time.

In the United States the National Bureau of Economic Research determines business cycle stages using quarterly GDP growth rates together with monthly indicators — employment, real personal income, industrial production and retail sales. Because analysing the data takes time, the phase is announced only after it has begun.

That lag is a real constraint on policy: a government is always acting on a picture of where the economy was, not where it is. And it is precisely why so many economic instruments are made by executive notification rather than by statute — the machinery has to move faster than a legislature can.

Trace the consequence through this syllabus and it is everywhere. Contraction is when insolvency and bankruptcy law is used most and amended most; it is when moratoria, relief packages and loan restructuring schemes appear, and when the constitutional questions about them are litigated. Overheating is when price control, anti-hoarding and essential-commodities powers are invoked — which is worked example 3 in its emergency setting.

Fiscal policy, by the legislature. Expansionary fiscal policy to end a recession, contractionary fiscal policy to keep the economy from overheating. The second rarely happens, because legislators get voted out of office when they raise taxes or cut popular programmes. Set that beside Module 3: a decrease of public expenditure during inflation decreases total demand and national earnings — the contractionary policy that is understood and not applied.

Monetary policy, by the central bank. It lowers interest rates to end a contraction or trough, and raises them to manage an expansion so that it does not peak. In India that is the repo rate, the single policy rate for signalling the monetary policy stance since June 2014.

The goal, stated plainly: to keep the economy growing at a sustainable rate — strong enough to create jobs for everyone who wants one, but slow enough to avoid inflation.

The causes. Three factors cause each phase: the forces of supply and demand, the availability of capital, and consumer confidence. The most critical is confidence in the future — the economy grows when there is faith in the future and in policymakers, and does the opposite when confidence drops.

The division matters legally, because only one of the three kinds is a target for stimulus.

• Frictional — the usual amount resulting from people who have left jobs that did not work out, and people entering or re-entering the labour force.
• Structural — resulting from permanent shifts in the pattern of demand for goods and services, or from changes in technology, so that workers need to learn new skills or move to other locations.
• Cyclical — occurring during periods of contraction or recession, or in any period when the economy fails to operate at its potential.

Total unemployment in any month is the sum of the three. Frictional and structural unemployment result from natural and unavoidable occurrences in a dynamic economy; cyclical unemployment is the result of imbalances between aggregate purchases and the aggregate production corresponding to full employment, and this is the controllable part.

So on the table in step 3, the rise from 4.4 to 7.1 per cent is not all cyclical. Only the part attributable to the demand shortfall can be addressed by stimulus; skilling and redeployment answer structural unemployment, demand management answers cyclical unemployment, and confusing the two produces bad policy and bad examination answers alike.

A caution about the measure itself. Because the labour force responds flexibly to changes in employment, and hours worked respond flexibly to output, changes in measured unemployment under-represent changes in gainful employment and earned income — so unemployment does not fully reflect the economic hardship caused by cyclical downturns. Working the other way, unemployment compensation partly cushions that hardship; and where official unemployment confers a right to income transfers exceeding what non-participants receive, preferential access to income support may itself be a reason to remain classified as unemployed rather than drop out of the labour force.

Read that alongside Module 2's definitions: the unemployment rate is the percentage of persons unemployed among the persons in the labour force, so a falling participation rate can make unemployment look better while fewer people are actually working. LFPR and UR must always be read together.

The eight quarters above are invented for the exercise; the benchmark ranges are United States figures, labelled as such.

1. Trade cycle = business cycle; Keynes — good trade with rising prices and low unemployment alternating with bad trade with falling prices and high unemployment.
2. Four characteristics: wave-like and recurrent; four phases not two; not symmetrical (boom ends fast, dip is slow); self-generating.
3. Four phases: expansion → peak → contraction (recession, deepening to depression) → trough → revival. Peak and trough are turning points, not periods.
4. Unemployment is a lagging indicator — it peaks after growth has turned. Phases are dated only after they begin, which is why the instruments are executive notifications.
5. Unemployment = frictional + structural + cyclical, and only cyclical is controllable by demand management. Fiscal policy (legislature) and monetary policy (central bank) manage the cycle; confidence is the most critical cause.