Chương 12 phân tích của các thị trường yếu tố: lao động doc

Chapter 12 The analysis of factor markets: labour David Begg, Stanley Fischer and Rudiger Dornbusch, Economics, 6th Edition, McGraw-Hill, 2000 Power Point presentation by Peter Smith 12.2 Some important questions  Why does a top professional footballer earn so much more than a professor?  Why does an unskilled worker in the EU earn more than an unskilled worker in India?  Why do market economies not manage to provide jobs for all their citizens who want to work?  Why are different methods of production used in different countries? 12.3 The demand for labour  Derived demand: – the demand for a factor of production is derived from the demand for the output produced by that factor.  Equalizing wage differential – the monetary compensation for the differential non-monetary characteristics of the same job in different industries – so workers have no incentive to move between industries. 12.4 Demand for factors in the long run  The optimum mix of capital and labour depends on the relative prices of these factors – This helps to explain why more labour-intensive means of production are used in some countries where labour is relatively abundant.  A change in the price of one factor will have both output and substitution effects  A rise in the wage rate leads to – substitution towards more capital-intensive techniques – but also leads to lower total output 12.5 The demand for labour in the short run  Under perfect competition, with diminishing marginal productivity:  the firm maximizes profit when the marginal cost of employing an extra worker equals the MVPL MVPL Employment W a g e , M V P L The marginal value product of labour is the revenue obtained by selling the output produced by an extra worker W 0 12.6 The demand for labour in the short run MVPL Employment W a g e , M V P L W 0 E …this occurs at E where wage = MVPL. L* Employment is L*. This decision is consistent with the MR = SMC rule for maximizing profit under perfect competition. Below L*, extra employment adds more to revenue than to labour costs. Above L*, the reverse is so. 12.7 Monopoly and monopsony power in the labour market  A firm may have MONOPOLY power in its output market – facing a downward-sloping demand curve – so the marginal revenue (MRPL) received from expanding output is less than the MVPL  as the firm must reduce price to sell more.  A firm may face MONOPSONY power in its input market – facing an upward-sloping supply curve for inputs – so the marginal cost of labour rises with employment 12.8 Monopoly and monopsony power (2) W 0 MVPL L 1 Employment £ Under perfect competition, a firm sets MVPL = W 0 and employs L 1 workers Facing a downward- sloping demand curve for its product, the firm sets MRPL = W 0 and employs L 3 workers MRPL L 3 12.9 Monopoly and monopsony power (3) W 0 MVPL L 1 Employment £ MRPL L 3 A monopsonist recognizes that additional employment bids up wages for existing workers, so MCL shows the marginal cost of an extra worker MCL Facing a given goods price, the monopsonist sets MCL = MVPL and employs L 2 workers. L 2 12.10 Monopoly and monopsony power (3) W 0 MVPL L 1 Employment £ MRPL L 3 MCL L 2 For a monopsonist who also faces a downward- sloping demand curve for the product, MCL is set equal to MRPL to employ L 4 workers. L 4 So monopoly and monopsony power both tend to reduce the firm’s demand for labour. [...]... work are supplied at a higher real wage rate 12. 11 The individual’s supply curve of labour Real wage SS2 For the labour supply SS1 curve SS1, an increase in the real wage induces higher labour supply Hours of work supplied Whereas for SS2, there comes a point where a higher wage induces less hours of work to be supplied: labour supply is backward-bending 12. 12 Labour supply in aggregate If we consider... participation rate so labour supply is likely to be upward-sloping 12. 13 Wage Labour market equilibrium for an industry The industry supply curve SLSL slopes up DL SL W0 DL SL L0 Quantity of labour – higher wages are needed to attract workers into the industry For a given output demand curve, industry demand for labour slopes down Equilibrium is W0, L0 12. 14 A shift in product demand Wage Beginning in equilibrium,... for labour to D'L The new equilibrium is at W1, L1 Quantity of labour 12. 15 Wage A change in wages in another industry S'L SL DL W2 W0 S'L SL L2 L0 DL Again starting in equilibrium, An increase in wages in another industry attracts labour, so industry supply shifts to the left – Quantity of labour The new equilibrium is at W2, L2 12. 16 Transfer earnings and economic rent Transfer earnings – the minimum... that use 12. 17 Transfer earnings and economic rent (2) Wage D W0 A 0 A E L0 In labour market equilibrium at W0, L0, SS If workers were paid only the transfer earnings, the industry would need only pay AEL0 in wages But if all workers must be paid the highest wage D needed to attract the marginal worker into the industry (W0), then workers as a whole derive economic Quantity rent of 0AEW0 12. 18 Cost... minimum quantities of inputs required to produce a given level of output An ISOCOST curve I KA I' I'' Capital – shows the different input combinations with the same total cost, given relative factor prices 12. 19 . Chapter 12 The analysis of factor markets: labour David Begg, Stanley Fischer and Rudiger Dornbusch, Economics, 6th Edition, McGraw-Hill, 2000 Power Point presentation by Peter Smith 12. 2 Some. and income determines if more or less hours of work are supplied at a higher real wage rate. 12. 12 The individual’s supply curve of labour Hours of work supplied R e a l w a g e SS 1 For the. the same job in different industries – so workers have no incentive to move between industries. 12. 4 Demand for factors in the long run  The optimum mix of capital and labour depends on the