econ-business-cycle
判斷景氣循環所處階段，並調整企業與財務策略
中文翻譯
---
name: "econ-business-cycle"
description: "分析景氣循環的各個階段（擴張、高峰、收縮、谷底），以及對企業策略和政策回應的意涵。當使用者需要判斷目前所處的經濟階段、預判循環轉折點，或讓企業策略配合總體經濟循環時使用。就算使用者只說「我們是不是要進入衰退了」、「該怎麼為景氣下滑做準備」或「經濟什麼時候會復甦」也要用。"
metadata:
category: "WP-17 經濟學院"
tags: ["economics", "business-cycle", "macroeconomics"]
---
# 景氣循環分析
## 概述
景氣循環描述經濟活動反覆的波動：擴張 → 高峰 → 收縮 → 谷底 → 擴張。了解目前所處的階段，能幫企業抓準投資時機、管理庫存，並為下滑或復甦做準備。
## 框架
```
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.
```
### 四個階段
| 階段 | 特徵 | 關鍵指標 |
|-------|----------------|----------------|
| **擴張（Expansion）** | GDP 上升、失業率下降、獲利成長、資產價格上漲 | PMI > 50、殖利率曲線正常、消費者信心上升 |
| **高峰（Peak）** | 經濟處於最大產出、通膨加速、產能受限 | PMI 從高點下滑、通膨高於目標、央行緊縮 |
| **收縮（Contraction）** | GDP 下滑、失業率上升、獲利下降、信用緊縮 | PMI < 50、殖利率曲線可能倒掛、裁員增加 |
| **谷底（Trough）** | 經濟處於最低點、產能過剩、低通膨、悲觀情緒到頂 | PMI 趨穩、央行寬鬆、庫存去化完畢 |
### 階段判斷步驟
1. **檢查領先指標**：PMI、殖利率曲線、股市、消費者信心、建照核發
2. **檢查同時指標**：工業生產、零售銷售、就業
3. **檢查落後指標**：失業率、CPI、企業獲利、貸款違約
4. **找背離**：領先指標已經轉向，但落後指標仍然強勁 = 轉折點
### 各階段的策略因應
| 階段 | 企業策略 | 財務策略 |
|-------|------------------|-------------------|
| **擴張** | 投資產能、招募、推出新產品 | 鎖定固定利率債務、累積準備金 |
| **高峰** | 降低庫存、收緊信用條件、準備成本削減 | 降低槓桿、提高現金部位 |
| **收縮** | 削減成本、保留現金、收購陷入困境的資產 | 延長債務期限、與債權人協商 |
| **谷底** | 逆週期投資、用較低成本延攬人才 | 動用現金準備、買進被低估的資產 |
### 衰退指標
| 指標 | 訊號 |
|-----------|--------|
| 殖利率曲線倒掛 | 10 年期減 2 年期公債利差為負 → 12-18 個月內衰退（歷史上準確率約 80%） |
| Sahm 規則 | 失業率 3 個月平均較 12 個月低點上升 0.5% 以上 |
| 連續 2 季 GDP 為負 | 技術性衰退（落後的確認） |
| 美國諮商會領先指標（Conference Board Leading Index） | 連續 6 個月以上下滑 |
## 輸出格式
```markdown
# 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} |
```
## 範例
### 正確的做法
**情境：** 2025 年第 4 季的台灣經濟
- PMI：48.5（低於 50，連續 3 個月下滑）→ **領先指標：收縮訊號**
- 消費者信心：下滑 → **領先指標：支持收縮的判斷**
- GDP：年增 +3.2% → **落後指標：仍為正**
- 失業率：3.6% → **落後指標：仍低**
**診斷**：很可能處於**高峰**或剛過高峰，進入收縮初期。領先指標轉負，但落後指標還沒跟上，這是典型的轉折點 ✓
**策略**：降低庫存、收緊應收帳款、提高現金部位、延後非必要的資本支出。
### 錯誤的做法
- 「GDP 是 3.2%、失業率 3.6%，一切都很好」→ 只看落後指標，卻忽略發出下滑訊號的領先指標。就像只看後照鏡開車。違反 Iron Law：循環不可避免，要為下一個階段做準備。
## 常見陷阱
- **殖利率曲線倒掛**：歷史上最強的衰退預測指標（領先約 12-18 個月），但也出現過誤報。要把它當作眾多訊號之一，不能當成單獨的觸發條件。
- **政策回應會改變循環**：央行介入（QE、降息）可以縮短收縮期或延長擴張期。現代的循環不會完全照教科書的模式走。
- **各產業的循環不同**：科技、房地產、大宗商品和民生必需品，循環的時間和幅度都不一樣。你的產業可能在收縮，整體經濟卻在擴張。
- **全球連動**：台灣的循環深受美國需求、中國經濟和全球半導體循環影響。光看國內指標不夠。
- **逆週期機會**：最佳投資時機往往在收縮期（價格低、有人才可用、競爭對手變弱）。但這需要事先累積現金準備，也需要勇氣。
## 參考資料
- 總體經濟指標的解讀，見 econ-macro-indicators skill
- 台灣景氣循環的歷史資料，見 `references/taiwan-cycles.md`英文原文
---
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: "WP-17 經濟學院"
tags: ["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
```markdown
# 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`