Macro EconomicsUnit 418 min read
Business Cycles: Phases, Theories & Real-World Impact
Unit 4 of Macro Economics explores the cyclical nature of economies through its phases (expansion, peak, recession, trough), theories (Keynesian, Real Business Cycle, Austrian), and real-world applications—showing how businesses, governments, and individuals adapt to economic fluctuations using Nepalese and global exam
TAKEAWAYS:
- Business cycles are repeating fluctuations in economic activity (GDP, employment, inflation) with 4 distinct phases (expansion, peak, recession, trough) driven by demand, supply shocks, or policy changes.
- The Keynesian theory explains cycles via aggregate demand shocks (e.g., consumer spending drops), while the Real Business Cycle (RBC) theory blames supply-side disruptions (e.g., natural disasters, tech shocks).
- Nepal’s cycles are amplified by remittance dependence, monsoon risks, and policy instability—e.g., the 2020 COVID-19 recession hit tourism (10% of GDP) and remittances (25% of GDP) hardest.
- Businesses use cycle data to time investments (e.g., Daraz expanding warehouses during expansions), while governments adjust fiscal/monetary policy (e.g., NBR cutting interest rates in 2021 to revive growth).
- Unemployment and inflation rise in recessions (e.g., Nepal’s 2015 fuel crisis caused a 6% GDP contraction and 12% unemployment spike in the informal sector).
- Exam focus: Link theories to Nepal’s data (e.g., "Explain how the 2015 fuel blockade fits the Keynesian cycle") and calculate growth rates from GDP figures.
1. What Are Business Cycles?
Business cycles are short-term (2–10 years) fluctuations in aggregate economic activity (GDP, employment, prices). They are not random but follow a predictable pattern of expansion → peak → recession → trough → recovery.
Key Characteristics
graph TD
A["Business Cycle"] --> B["Expansion"]
A --> C["Peak"]
A --> D["Recession"]
A --> E["Trough"]
B -->|"GDP ↑, Jobs ↑"| C
C -->|"GDP ↓, Jobs ↓"| D
D -->|"GDP hits bottom"| E
E -->|"Recovery begins"| B- Amplitude: Strength of the cycle (e.g., 2008 global financial crisis vs. 2021 V-shaped recovery).
- Frequency: Duration (e.g., Kondratiev waves = 50-year tech cycles; Juglar cycles = 7–11 years for investment goods).
- Asymmetry: Recessions are sharper than expansions (e.g., Nepal’s 2015 blockade caused a 6% GDP drop in one quarter).
Why Do Cycles Happen?
| Cause | Example in Nepal | Theory Link |
|---|---|---|
| Demand shocks | 2020 COVID-19 lockdown → tourism collapse | Keynesian (AD ↓) |
| Supply shocks | 2015 fuel blockade → fuel prices ↑ 300% | RBC (AS ↓) |
| Policy changes | NBR cutting repo rate from 8% → 6% (2021) | Monetarist (MS ↑) |
| External shocks | Global oil price spike (2022) → import bill ↑ | International trade theory |
2. The Four Phases of a Business Cycle
Phase 1: Expansion (Boom)
- GDP growth > 3% (Nepal’s avg. is 4.5% in expansions).
- Unemployment falls (e.g., 2018–2019: Nepal’s unemployment dropped to 18% from 22%).
- Inflation rises (e.g., 2018: Nepal’s inflation hit 6.5% due to demand-pull).
- Businesses invest (e.g., Daraz expanded warehouses in 2018–19).
(Shows peaks in 2018–19 and troughs in 2015–16, 2020–21.)
Phase 2: Peak (Boom → Bust)
- GDP growth peaks (e.g., Nepal’s 7.1% in 2019 before COVID-19).
- Inflation hits ceiling (e.g., 2018: 6.5% → NBR raises repo rate to 8%).
- Overheating: Wages ↑, costs ↑, profits ↓ (e.g., hotels in Kathmandu raised prices by 20% in 2019).
Phase 3: Recession (Contraction)
- GDP falls for 2+ consecutive quarters (e.g., 2020: Nepal’s GDP shrunk by 2.3%).
- Unemployment rises (e.g., 2020: 25% in informal sectors like tourism).
- Deflation risk (e.g., 2020: Nepal’s inflation dropped to 1.5%).
WORKED EXAMPLE: Nepal’s 2015 Fuel Blockade (Supply Shock)
- Event: Madhesi protests blocked fuel supply for 3 months.
- Impact:
- GDP growth: 6% → 0.7% (2015).
- Inflation: Fuel prices ↑ 300% → overall inflation 12%.
- Unemployment: Informal sector jobs lost (e.g., rickshaw pullers, small shops).
- Theory Fit: Real Business Cycle (RBC)—supply shock (fuel) → AS ↓ → GDP ↓.
Phase 4: Trough (Bottom)
- GDP stops falling (e.g., 2021: Nepal’s GDP grew by 4.9% post-lockdown).
- Unemployment stabilizes (e.g., 2021: 20%).
- Policy response: Fiscal stimulus (e.g., NPR 100B relief package in 2020).
3. Theories Explaining Business Cycles
| Theory | Key Idea | Nepal Example | Strengths | Weaknesses |
|---|---|---|---|---|
| Keynesian | Cycles caused by aggregate demand (AD) fluctuations (consumption, investment, government spending). | 2020 COVID-19 → AD ↓ → GDP ↓ 2.3%. | Explains recessions well. | Ignores supply-side shocks. |
| Real Business Cycle (RBC) | Cycles caused by supply shocks (tech, weather, policies). | 2015 fuel blockade → AS ↓ → inflation ↑. | Explains long-term growth. | Overlooks demand-side factors. |
| Monetarist | Cycles caused by money supply (MS) changes (e.g., NBR’s repo rate). | 2021: NBR cut repo rate to 6% → growth ↑. | Simple, policy-friendly. | Assumes perfect markets (not true in Nepal). |
| Austrian | Cycles caused by artificial credit expansion (e.g., banks lending too much). | 2008 global crisis → Nepal’s banks NPAs ↑. | Explains booms/busts. | Hard to test empirically. |
4. Business Cycles in Nepal: Data & Trends
Nepal’s Cycle Drivers
- Remittance Dependency (25% of GDP):
- Expansion: Remittances ↑ (e.g., 2018: USD 8B) → AD ↑.
- Recession: Remittances ↓ (e.g., 2020: USD 6.5B) → AD ↓.
- Monsoon & Agriculture (24% of GDP):
- Bad monsoon → food prices ↑ → inflation ↑ (e.g., 2019: 8%).
- Policy Instability:
- Fuel price hikes (e.g., 2022: NPR 120/L → protests).
- Lockdowns (e.g., 2020–21: GDP ↓ 2.3%).
(Shows spikes in 2015 [12%], 2018 [6.5%], and drops in 2020 [1.5%].)
Nepal’s Business Cycle vs. Global Cycles
| Factor | Nepal | Developed Economies (USA/EU) |
|---|---|---|
| Main Driver | Remittances, agriculture, policy shocks | Tech innovation, consumer spending, trade |
| Cycle Length | Shorter (3–5 years) due to instability | Longer (7–11 years, e.g., Juglar cycles) |
| Recovery Speed | Slow (e.g., 2015 blockade took 2 years) | Faster (e.g., 2021 V-shaped recovery in USA) |
| Unemployment Impact | Hits informal sector hardest (e.g., rickshaws) | Affects manufacturing/services uniformly |
5. How Businesses Use Cycle Information
Case Study: Daraz (Nepal’s Amazon) & Business Cycles
Strategy: Adjust inventory and hiring based on cycle phases.
- Expansion (2018–19):
- Action: Expanded warehouses in Kathmandu, Pokhara, Biratnagar.
- Why: Demand for electronics ↑ (GDP growth 7.1%).
- Recession (2020):
- Action: Cut non-essential hiring, focused on essential goods (groceries, medicines).
- Why: Lockdown → e-commerce demand shifted (food ↑ 300%, electronics ↓ 50%).
- Recovery (2021):
- Action: Hired 5,000 new staff, launched financing options (easy EMI).
(Shows dip in 2020, recovery in 2021–22.)
Hotel Manager’s Decision-Making
| Cycle Phase | Action | Example (Kathmandu Hotels) |
|---|---|---|
| Expansion | Hire staff, upgrade rooms, market aggressively. | 2019: Hotel Yak & Yeti added 50 rooms. |
| Peak | Raise prices, optimize staffing. | 2019: Room rates ↑ 20% (inflation at 6.5%). |
| Recession | Cut costs, offer discounts, retrain staff. | 2020: Hotel Himalaya laid off 30% staff. |
| Trough | Invest in loyalty programs, wait for recovery. | 2021: Hotel Malla offered "book now, pay later". |
6. Government & Central Bank Responses
Fiscal Policy (Nepal’s Tools)
| Tool | Expansion Phase | Recession Phase |
|---|---|---|
| Government Spending | Cut subsidies (e.g., fuel) to control inflation. | Increase spending (e.g., NPR 100B relief in 2020). |
| Taxes | Raise taxes (e.g., VAT ↑ from 13% to 18% in 2018). | Cut taxes (e.g., income tax relief for SMEs in 2020). |
Monetary Policy (NBR’s Tools)
| Tool | Expansion (Overheating) | Recession (Slowdown) |
|---|---|---|
| Repo Rate | Increase (e.g., 8% in 2018). | Decrease (e.g., 6% in 2021). |
| Reserve Requirement | Increase (e.g., 4% → 6%). | Decrease (e.g., 3% in 2020). |
| Open Market Operations | Sell bonds to absorb liquidity. | Buy bonds to inject liquidity. |
WORKED EXAMPLE: NBR’s 2021 Policy Response
- Problem: COVID-19 recession → GDP ↓ 2.3%, unemployment ↑.
- Action:
- Cut repo rate from 8% → 6% (cheaper loans).
- Reduced reserve requirement from 4% → 3% (banks lend more).
- Liquidity injection via NPR 50B bond purchases.
- Result: GDP grew by 4.9% in 2021.
7. Comparing Nepal’s Cycles to Global Trends
Nepal vs. USA Business Cycles
| Aspect | Nepal | USA |
|---|---|---|
| Main Driver | Remittances, agriculture, policy shocks | Consumer spending, tech innovation, trade |
| Cycle Length | 3–5 years (shorter) | 7–11 years (Juglar cycles) |
| Recovery Speed | Slow (2–3 years post-crisis) | Fast (1–2 years, e.g., 2021 V-shaped recovery) |
| Unemployment Impact | Hits informal sector (e.g., rickshaws) | Affects manufacturing/services uniformly |
| Policy Tools | Limited fiscal space (high debt/GDP ratio) | Strong fiscal/monetary tools (e.g., stimulus checks) |
8. Exam Tip: How to Score Full Marks
Link theories to Nepal’s data:
- Bad example: "Keynesian theory says AD causes cycles."
- Good example: "In 2020, Nepal’s AD fell by 15% due to COVID-19 lockdowns (Keynesian), causing a 2.3% GDP contraction."
Use real numbers:
- Weak: "Unemployment rises in recessions."
- Strong: "In Nepal’s 2015 fuel blockade, unemployment in the informal sector rose from 18% to 25%."
Compare phases with data:
- Question: "Describe the recession phase."
- Answer:
"In Nepal’s 2020 recession, GDP fell by 2.3%, unemployment rose to 25%, and inflation dropped to 1.5% due to low demand. Businesses like Daraz cut hiring, while the government injected NPR 100B to revive AD."
Policy recommendations:
- Weak: "Government should spend more."
- Strong: "To revive Nepal’s 2020 recession, the government should:
- Increase infrastructure spending (e.g., NPR 50B for roads) to boost AD (Keynesian).
- Cut VAT from 18% to 13% to stimulate consumption.
- NBR should keep repo rate at 6% to encourage lending."
Diagrams are worth 5+ marks:
- Always draw AD-AS curves for Keynesian explanations.
- For RBC, show supply shocks shifting AS.
- For business cycles, use the 4-phase diagram above.
9. In the Real World
Example 1: eSewa & Digital Payments During Cycles
- Idea Used: Aggregate Demand (AD) shifts during recessions.
- How It Works:
- In expansions (e.g., 2018–19), eSewa saw 30% YoY growth as more people used digital payments.
- In recessions (e.g., 2020), eSewa partnered with banks to offer cashback incentives to boost spending (AD ↑).
- Data: eSewa transactions dropped by 15% in 2020 but recovered in 2021 with policy support.
Example 2: Pathao’s Ride-Hailing & Unemployment
- Idea Used: Labor market adjustments in cycles.
- How It Works:
- Expansion (2018–19): Pathao hired 10,000 drivers as demand ↑ (GDP growth 7.1%).
- Recession (2020): 50% of drivers quit due to low fares (demand ↓).
- Recovery (2021): Pathao offered subsidies to retain drivers and partnered with hotels for airport transfers.
Example 3: NEPSE Stock Market & Investor Behavior
- Idea Used: Animal Spirits & Speculative Bubbles (Austrian theory).
- How It Works:
- 2018 Boom: NEPSE index rose 30% as foreign investment ↑ (AD ↑).
- 2020 Bust: Index fell 25% as investors panicked (liquidity crisis).
- 2021 Recovery: NBR’s low repo rate (6%) encouraged margin trading, boosting the market.
10. Practice Questions (Exam-Style)
Short Answer:
- "Define a business cycle and explain why Nepal’s cycles are shorter than those in the USA."
- Answer:
A business cycle is a repeating pattern of economic expansion and contraction measured by GDP, employment, and inflation. Nepal’s cycles are shorter (3–5 years) due to:
- Remittance volatility (25% of GDP).
- Agricultural dependence (monsoon risks).
- Policy instability (e.g., fuel blockades). In contrast, the USA has longer cycles (7–11 years) driven by tech innovation and stable institutions.
Data Interpretation:
- Given Nepal’s GDP growth rates: 2018: 7.1%, 2019: 6.8%, 2020: -2.3%, 2021: 4.9%.
- Identify the phases and explain the 2020 drop using Keynesian and RBC theories.
- Answer:
- 2018–19: Expansion (GDP ↑).
- 2020: Recession (GDP ↓ 2.3%).
- Keynesian: AD ↓ due to COVID-19 lockdowns → consumption ↓.
- RBC: Supply shock (healthcare collapse) → AS ↓.
- 2021: Recovery (GDP ↑ 4.9%) due to NBR’s repo rate cut (6%) and fiscal stimulus (NPR 100B).
Case Study:
- "How would a Nepali bank adjust its lending policies during a recession?"
- Answer:
During a recession (e.g., 2020), a Nepali bank like NMB or Global IME would:
- Reduce loan interest rates (e.g., from 12% → 9%) to encourage borrowing.
- Focus on priority sectors (e.g., agriculture, healthcare) where demand is stable.
- Offer moratoriums (e.g., 6-month loan holidays) to help SMEs.
- Increase liquidity by borrowing from NBR’s rediscount window. Example: In 2020, NMB reduced home loan rates by 2% to revive demand.
11. Key Formulas for Exams
| Concept | Formula | Example |
|---|---|---|
| GDP Growth Rate | 2020: | |
| Unemployment Rate | 2020: | |
| Inflation Rate | 2020: |
12. Common Mistakes to Avoid
- Mistake: Saying "business cycles are only about GDP."
- Fix: Include employment, inflation, and investment.
- Mistake: Ignoring Nepal-specific factors (remittances, monsoon).
- Fix: Always relate theories to Nepal’s data.
- Mistake: Drawing AD-AS without shifts.
- Fix: Use dashed lines for shifts (e.g., AD ↓ in recession).
- Mistake: Confusing Keynesian (AD) vs. RBC (AS).
- Fix: Remember:
- Keynesian = Demand problem (e.g., COVID-19).
- RBC = Supply problem (e.g., fuel blockade).
- Fix: Remember:
13. Summary Diagram: Business Cycle & Policy Responses
flowchart TD
A["Business Cycle"] --> B["Expansion"]
A --> C["Peak"]
A --> D["Recession"]
A --> E["Trough"]
B -->|"GDP ↑, Jobs ↑"| C
C -->|"GDP ↓, Jobs ↓"| D
D -->|"GDP hits bottom"| E
E -->|"Recovery"| B
D --> F["Policy Responses"]
F --> F1["Fiscal: ↑ Govt Spending"]
F --> F2["Monetary: ↓ Repo Rate"]
F --> F3["NBR: Liquidity Injection"]Based on the TU BBA syllabus for Macro Economics (ECO204), unit 4.
Discussion
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