Balanced budget multiplier
An increase in government spending accompanied by a equal rise in taxes results in an increase in output
Fine tuning
Frequent discretionary adjustments to policy implementation
Stabilisation policy
Deliberate govt actions aimed at keeping actual GDP close to potential
Automatic stabilisers
Mechanisms in the economy that reduce the response of GDP to shocks
Easy money
Monetary policy stance in which the central bank increases the money supply and allows the interest rate to fall
Efficiency wage theory
Firms may rationally pay wages above the market clearing to raise productivity
Efficiency wage theory - 4 mechanisms
Worker effort - reduce shirking
Worker turnover - reduce costly training
Worker quality - better applicants
Worker health - better nutrition and productivity
Implications of efficiency wage theory
Moral hazard - arises after hiring
Adverse selection - arises before hiring
Cyclical unemployment
Caused by insufficient AD as labour is a derived demand. Wages are sticky downward which prevents market clearing.
Policy response is expansionary policy.
Classical Unemployment - Real wage
Occurs when real wages are too high due to unions or min wage - creates excess labour supply
Structural unemployment
Declining demand for particular skills
Persists due to:
skills mismatch
location mismatch
resistance to wage cuts
gender segmentation
Frictional Unemployment
Short term unemployment arising from job search and matching - influenced by the replacement ratio and duration of benefits
Replacement ratio
Ratio of unemployment benefits to income
Policy induced shocks
Monetary tightening to curb inflation or fiscal stimulus to fight recession
Supply shocks
oil prices increasing or tech breakthroughs
Why do cycles recur?
Policy lags
Authorities overshoot
Expansion causes inflation which requires contraction
Multiplier
Extra autonomous spending creates a larger rise in income through consumption feedback via MPC
Expectations augmented Phillips curve
Workers and firms adjust wages and prices based on expected inflation. SR trade off exists only while expectations lag. Once expectations adjust, inflation rises without permanent employment gains.
Transmission mechanism from money to AD
CB increases MS
Interest rates fall
Rise in investment, borrowing and asset prices
Wealth effect causes confidence and consumption rise
Exchange rate depreciation
Net exports rise
AD shifts right
Current income hypothesis
Consumption is determined by current income
Most income is spent in SR
Doesn’t consider future expectations
Permanent income hypothesis
Consumption depends on expected lifetime income
Consumption smoothing
Relies on access to credit
Okuns law
Relationship showing that a 1% rise in unemployment above the natural rate is associated with roughly a 2% fall in GDP below potential
Natural rate
Rate when the labour market is at equilibrium - removing cyclical unemployment
Accelerator model
Changes in investment spending are a multiplied response to changes in national income or demand. Investment depends positively and more than proportionally on the change in GDP not its level