How Does an Economy Work?. The Macro-Economics of European Economies MSc in Economic Policy Studies John FitzGerald, January 2015. Course Outline. How does an economy work? JF 16-1-2015 The genesis of macroeconomics AM 23-1-2015 Modern macroeconomics AM 30-1-2015
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How Does an Economy Work? The Macro-Economics of European Economies MSc in Economic Policy Studies John FitzGerald, January 2015
Course Outline • How does an economy work? JF 16-1-2015 • The genesis of macroeconomics AM 23-1-2015 • Modern macroeconomics AM 30-1-2015 • Banks and financial markets AM 6-2-2015 • The recent crisis AM 13-2-2015 • The labour market JF 20-2-2015 • Fiscal Policy and forecasting JF 6-3-2015 • Trade JF 13-3-2015 • The economics of global warming JF 20-3-2015 • The future of the Irish economy AM and JF 27-3-2015
Outline of Lecture • Theory • Different “markets” • A model of the economy • Equilibrium and Disequilibrium • Market “Imperfections”, Expectations, Behaviour • Applied - examples from 2000-15 • The EU and the US economies • Disequilibria in EU economies • How economies adjust
Different Markets • Useful to consider the economy as a series of markets • The Goods (and Services) market • Money / Financial Markets • Labour Market • Housing Market • Government sector • These markets are interlinked – a “model” of the economy • For equilibrium in the economy the markets must be consistent
The Goods market - 1 • Demand for Goods (and Services) • C+I+G : Closed economy • C+I+G+X : Open economy • C=Private Consumption; I= Investment; G= Government consumption; X=Exports • Supply of Goods (and Services) • Y : Closed economy • Y+M : open Economy • Y = Domestic Output; M=Imports • Disequilibrium? • Inflation, Current account of the balance of payments • Imperfections?
The Goods market - 2 • Y=C+I+G (+X-M) • Y= GDP, output = expenditure = income – demand for goods (and services) • Y=Q • Q= National output – supply of goods (and services) • C=a + b(Y - T) • T=Government revenue; a and b are coefficients, where b is 0<b<1 • Y=a + bY – bT + I + G + (X - M) • Y(1-b)= a + I + (X - M) + G - bT • Assumes output will respond to an increase in demand • is the “multiplier”
The Goods market - 3 • S=Y-C-T • S= Savings • Y=C+I+G+(X-M) • Y-C-T=S=I+(X-M)+(G-T) • S+(T-G)=I+(X-M) • Total savings equals investment plus the current account surplus • What happens if people want to save more?
The Goods market - 4 • Growth? • Output is a function of inputs and productivity • Inputs: labour, capital, materials • Investment increases capital and hence the productive potential of economy • Investment in human capital (education) increases productivity of labour • Investment in R&D may raise productivity of all factors • Q= Y = a function of K,L,M, productivity • The stock of capital labour and materials determines potential output • However, how much will it be profitable to produce?
The Goods market - 5 • Profits=P*Q-W*L-Pk*K-Pm*M where firms maximise profits • P= price of output; W= price of labour; L= employment; Pk= price of capital; K= capital stock; M = materials; Pm= price of materials • This means that output doesn’t automatically adjust to meet demand • Open economy: is it profitable to produce in Ireland? • If it is, how much labour, capital and materials will you need? • Competitiveness matters • In the long run it is through raising output that living standards rise. • Raising demand on its own may not lead to increased output. • e.g. Irish government policy in 1977-1979 • Imperfections?
Money / Financial markets • Demand for Money • Need money to buy and sell • Affected by cost - credit • Supply of Money • Central Bank can create money • Banks extend credit based on their stock of money • Disequilibrium? • e.g. inflows on financial account of the balance of payments • Imperfections? • e.g. Expectations – drive bubbles
The Labour market • Labour Demand • How profitable are firms – what happens to output • Cost in home country relative to foreign determines share of world output • Price of labour (labour costs), price of capital, price of materials • Openness of economy affects behaviour • Labour Supply • Demographics, Wage Rates, Costs of working, Value of leisure, Culture • Openness of economy affects behaviour - migration • Equilibrium – Disequilibrium • Unemployment rate, rate of wage inflation • Imperfections?
The Housing market • Demand – factors driving demand • Demographics – natural increase • Income / wealth • Cost – user cost, a function of interest rates, expected prices • Supply – factors driving supply • Profitability of building – price relative to costs • Costs – labour, materials, land • Disequilibrium • How to measure it? • Rate of price increase? • Imperfections?
Government Sector • Revenue and Expenditure • Revenue • Economic costs of taxation • Economic impact of taxation • Other Revenue • Expenditure • Government Consumption • Government Transfers • Subsidies • Investment • Measure of imbalance – Deficit or Surplus • Debt - sustainability
A model of the economy • An equilibrium solution for economy requires equilibrium in all markets • Markets are interlinked. • Linked by many variables: • Interest rates, wage rates, prices, etc. etc. • How will economy adjust to exogenous changes? • e.g. changes in budget, changes in oil prices, changes in monetary policy • How can governments influence growth? • Importance of the supply side
Equilibrium, Disequilibrium • May be out of long-term equilibrium. e.g. • Running an increasing current account deficit – demand > output • Inflation high and rising (prices and wages) • Unemployment high • Will economy return to equilibrium of its own accord? • Possibility of multiple equilibria • What is the role of government? • Adjustment takes time • Time to invest, to change output, to change expectations • Never actually in equilibrium
Market Imperfections, Expectations, Behaviour • Market imperfections e.g.: • Monopolies / oligopolies: make more from lower output • Adjustment takes time e.g. investment • SME’s cannot finance themselves because of financial sector difficulties • Unions and employer cartels may affect wage bargaining • Restrictions on supply of building land may affect housing supply • Can Government improve the situation? • Expectations e.g. • People have economic “models” in their heads. These models may or may not be correct • Consumption affected by lifetime income – what is lifetime income? • Expect a rise in house prices – get on the property ladder! • Behaviour • In chemistry H2O always combine like that. • No such certainties with human behaviour. History rarely repeats itself.
Applied • Europe and the US 2007 • Goods market – Current account of the balance of payments and inflation • Money market – interest rates, nominal and real • Labour Market – unemployment and wage inflation • Housing Market – was there a housing market • Europe and the US 2015 • Goods market – Current account of the balance of payments and inflation • Money market – the “zero lower bound” • Labour market – out of equilibrium – will it return to full employment? • Housing market – EU economies and the US • The investment question
