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name econ-business-cycle
description Analyze business cycle phases (expansion, peak, contraction, trough) and their implications for business strategy and policy response. Use this skill when the user needs to identify the current economic phase, anticipate cyclical turning points, or adapt business strategy to macroeconomic cycles — even if they say 'are we heading into a recession', 'how should we prepare for a downturn', or 'when will the economy recover'.
metadata
category tags
WP-17 經濟學院
economics
business-cycle
macroeconomics

Business Cycle Analysis

Overview

The business cycle describes recurring fluctuations in economic activity: expansion → peak → contraction → trough → expansion. Understanding the current phase helps businesses time investments, manage inventory, and prepare for downturns or recoveries.

Framework

IRON LAW: Cycles Are Inevitable, Timing Is Not Predictable

Business cycles WILL happen — no economy grows forever. But predicting
EXACTLY when a peak or trough occurs is unreliable. Focus on identifying
the CURRENT phase and preparing for the NEXT one, not predicting exact
turning points.

The Four Phases

Phase Characteristics Key Indicators
Expansion Rising GDP, falling unemployment, growing profits, rising asset prices PMI > 50, yield curve normal, consumer confidence rising
Peak Economy at maximum output, inflation accelerating, capacity constraints PMI declining from highs, inflation above target, central bank tightening
Contraction Falling GDP, rising unemployment, declining profits, credit tightening PMI < 50, yield curve may invert, layoffs increasing
Trough Economy at minimum, excess capacity, low inflation, maximum pessimism PMI stabilizing, central bank easing, inventories depleted

Phase Identification Steps

  1. Check leading indicators: PMI, yield curve, stock market, consumer confidence, building permits
  2. Check coincident indicators: Industrial production, retail sales, employment
  3. Check lagging indicators: Unemployment rate, CPI, corporate profits, loan delinquency
  4. Look for divergence: Leading indicators turning while lagging are still strong = inflection point

Strategic Response by Phase

Phase Business Strategy Financial Strategy
Expansion Invest in capacity, hire, launch new products Lock in fixed-rate debt, build reserves
Peak Reduce inventory, tighten credit terms, prepare cost cuts Reduce leverage, increase cash position
Contraction Cut costs, preserve cash, acquire distressed assets Extend debt maturities, negotiate with creditors
Trough Invest counter-cyclically, acquire talent at lower cost Deploy cash reserves, buy undervalued assets

Recession Indicators

Indicator Signal
Inverted yield curve 10Y-2Y Treasury spread negative → recession in 12-18 months (historically ~80% accurate)
Sahm Rule Unemployment 3-month average rises 0.5%+ from 12-month low
2 consecutive quarters negative GDP Technical recession (lagging confirmation)
Conference Board Leading Index 6+ months of decline

Output Format

# Business Cycle Assessment: {Country/Region}

## Current Phase: {Expansion / Peak / Contraction / Trough}

## Evidence
| Category | Indicator | Reading | Signal |
|----------|-----------|---------|--------|
| Leading | PMI | XX | {interpretation} |
| Leading | Yield curve | XX bps | {interpretation} |
| Coincident | Industrial production | X% YoY | {interpretation} |
| Lagging | Unemployment | X% | {interpretation} |

## Phase Progression
{Where we are in the cycle and directional signals}

## Strategic Implications
| Domain | Recommendation |
|--------|---------------|
| Investment | {expand/hold/cut} |
| Hiring | {hire/freeze/reduce} |
| Inventory | {build/maintain/liquidate} |
| Pricing | {raise/hold/discount} |
| Cash management | {deploy/conserve} |

Examples

Correct Application

Scenario: Taiwan economy Q4 2025

  • PMI: 48.5 (below 50, declining for 3 months) → Leading: contraction signal
  • Consumer confidence: declining → Leading: supports contraction
  • GDP: +3.2% YoY → Lagging: still positive
  • Unemployment: 3.6% → Lagging: still low

Diagnosis: Likely at or just past Peak, entering early contraction. Leading indicators are negative but lagging indicators haven't caught up yet — classic inflection point ✓

Strategy: Reduce inventory, tighten receivables, build cash position, delay non-essential capex.

Incorrect Application

  • "GDP is 3.2% and unemployment is 3.6%, everything is fine" → Only looking at lagging indicators while ignoring leading indicators that signal a downturn. Like driving by looking only in the rearview mirror. Violates Iron Law: cycles are inevitable, prepare for the next phase.

Gotchas

  • Yield curve inversion: Historically the strongest recession predictor (~12-18 month lead time), but has produced false positives. Use as one signal among many, not a standalone trigger.
  • Policy response changes cycles: Central bank intervention (QE, rate cuts) can shorten contractions or extend expansions. Modern cycles don't follow textbook patterns exactly.
  • Sector cycles differ: Tech, real estate, commodities, and consumer staples cycle at different times and amplitudes. Your industry may be contracting while the overall economy expands.
  • Global interconnection: Taiwan's cycle is heavily influenced by US demand, China's economy, and the global semiconductor cycle. Domestic indicators alone are insufficient.
  • Counter-cyclical opportunity: The best time to invest is often during contraction (low prices, available talent, weakened competitors). But it requires pre-built cash reserves and courage.

References

  • For macroeconomic indicators interpretation, see the econ-macro-indicators skill
  • For historical Taiwan business cycle data, see references/taiwan-cycles.md