3.3.5 - Government intervention
- Syllabus
- 2018
- Topic
- 3.3.5
- Level
- A2
Learning objectives
3.3.51a - case for government intervention. intervention inThe case for government intervention. intervention in3.3.51b - Measures to control monopolies and mergers: product markets • price regulation • profitMeasures to control monopolies and mergers: product markets; price regulation; profit regulation; quality standards; performance targets; referral to regulatory authorities; legislation to control mergers and takeovers.3.3.51c - Measures to promote competition and contestability: • tax incentives and grants toMeasures to promote competition and contestability:; tax incentives and grants to promote small businesses and FDI; deregulation; privatisation; competitive tendering for public sector contracts; trade liberalisation.3.3.51d - Measures to protect suppliers and employees: • local sourcing of raw materials andMeasures to protect suppliers and employees:; local sourcing of raw materials and components; employment legislation to protect workers from; exploitation; barriers to entry of foreign firms; restrictions on the monopsony power of firms; nationalisation.3.3.51e - impact of each measure on: • price • profit • efficiency • quality • choiceThe impact of each measure on:; price; profit; efficiency; quality; choice.3.3.51f - Limits to government intervention: • regulatory capture • asymmetricLimits to government intervention:; regulatory capture; asymmetric information/information gaps; inadequate resources; lack of regulatory power.3.3.52a - case for government intervention. intervention inThe case for government intervention. intervention in3.3.52b - Government intervention in labour marketsEvaluate maximum and minimum wage controls, direct taxes, measures addressing labour immobility, and measures reducing discrimination and exploitation.
Why intervene in product markets?
Government intervention has a case when an unregulated product market creates market power or another market failure, so private decisions produce a lower-welfare outcome than a feasible policy could achieve.
| Problem | Possible welfare loss | Policy aim |
|---|---|---|
| monopoly power | price above marginal cost, restricted output and excess profit | constrain power or strengthen rivalry |
| weak competition/entry barriers | X-inefficiency, weak innovation or limited choice | make entry and switching more credible |
| poor quality or hidden information | consumers cannot judge or enforce service | set and monitor standards |
| monopsony/exploitation | suppliers or employees receive less and sell less than under competition | rebalance bargaining power and enforce protections |
The economic case is comparative: estimate the market failure, choose a targeted measure, then compare its expected welfare gain with enforcement cost, information limits and unintended effects.
The existence of a large firm is not sufficient evidence for intervention. Market definition, entry threat, scale economies, conduct and likely government failure determine whether action improves welfare.
Controlling monopolies and mergers
| Measure | Control mechanism | Main risk |
|---|---|---|
| price regulation | caps the price or its rate of increase | a cap set too low can weaken maintenance, quality and investment |
| profit regulation | limits allowable returns or requires excess gains to be shared | reported costs and required returns are hard to estimate |
| quality standards | sets a legal minimum for safety, reliability or service | compliance cost may raise prices or encourage box-ticking |
| performance targets | ties monitored outcomes to rewards, penalties or licences | firms may optimise the measured target and neglect other quality |
| referral to a regulatory authority | enables investigation, orders, fines or remedies for abuse | weak powers/resources make deterrence ineffective |
| merger/takeover legislation | blocks, conditions or unwinds deals likely to reduce competition | preventing scale economies can preserve higher costs |
Choose the instrument that matches the failure: price rules address excessive charges, standards address quality, and merger control protects the competitive structure before dominance becomes difficult to reverse.
Tighter control is not automatically better. A natural monopoly may need enough revenue to cover average cost and finance investment, so price, profit and quality rules must be assessed together.
Promoting competition and contestability
| Measure | How entry or rivalry may increase | Limitation |
|---|---|---|
| tax incentives/grants for small firms and FDI | lower start-up or operating cost | support may be too small, poorly targeted or create dependence |
| deregulation | removes unnecessary legal/time costs of entry | incumbents may also gain and essential protections may weaken |
| privatisation | introduces profit incentives and scope for private rivalry | a public monopoly can become a private monopoly |
| competitive tendering | firms compete on price/quality for a time-limited public contract | collusion or complex specifications can protect incumbents |
| trade liberalisation | removes barriers facing foreign suppliers | very strong entrants may displace domestic rivals and later concentrate power |
The strongest measures reduce entry, expansion and exit barriers. More firms are not enough if entrants face high sunk costs, cannot reach consumers or cannot compete on equal terms.
Privatisation and deregulation describe changes in ownership or rules, not guaranteed increases in competition. Test whether credible independent entry and consumer switching actually follow.
Protecting suppliers and employees
| Measure | Protection mechanism | Trade-off |
|---|---|---|
| local sourcing requirements | reserves demand for domestic inputs/components | may raise cost or reduce access to better inputs |
| employment legislation | sets enforceable pay, hours, safety and treatment standards | weak enforcement fails; high compliance cost may reduce hiring |
| barriers to entry of foreign firms | shields domestic suppliers and jobs from external rivalry | reduces competition, choice and pressure to improve |
| restrictions on monopsony power | limits unfair purchasing/employment terms or strengthens bargaining | powerful buyers may relocate or reduce purchases/employment |
| nationalisation | replaces private profit objectives with public-service and fairness aims | political control can weaken cost discipline and require taxpayer finance |
Protection is most justified where a dominant buyer or employer can impose terms because suppliers and workers have few alternatives. The policy should raise bargaining power or enforce minimum conditions without destroying the demand it seeks to protect.
Protecting a group is not costless: trace effects on consumer prices, output, entry, employment and public spending rather than assuming the legal protection reaches its intended beneficiary.
Evaluating a product-market measure
Evaluate every intervention through the same causal chain: identify the instrument and binding constraint, predict the firm's response, then trace price, profit, efficiency, quality and choice before adding the policy's information and enforcement limits.
| Outcome | Questions that determine the effect |
|---|---|
| price | Does the rule cap price directly, lower entry costs, or raise compliance cost that may be passed on? |
| profit | Does it reduce price/market power, lower costs, or require new investment? Is the firm still viable? |
| efficiency | Does competition reduce X-inefficiency and price move toward MC? Are scale or dynamic-investment incentives lost? |
| quality | Are standards enforceable, or will a tight price/profit limit encourage quality cutting? |
| choice | Does entry/foreign rivalry widen options, or do exit and concentration remove services? |
Measures interact: a price cap can help consumers immediately but undermine quality if the permitted revenue cannot finance maintenance; pairing price and quality regulation can control that trade-off but raises monitoring cost.
Do not list effects independently. The direction and size depend on how binding the measure is, market structure, elasticities, time horizon, compliance, pass-through and the counterfactual without intervention.
Why government intervention can fail
| Limit | Causal problem |
|---|---|
| regulatory capture | the regulator comes to favour the regulated firms rather than public welfare |
| asymmetric information/information gaps | firms know costs, quality or conduct better, so the rule/target may be set wrongly |
| inadequate resources | too little funding, staff or expertise weakens investigation, monitoring and enforcement |
| lack of regulatory power | the authority cannot obtain information, impose remedies or set penalties large enough to deter abuse |
A mis-set price cap can permit exploitation or make a viable firm unable to invest. A weak quality rule can create compliance paperwork without better outcomes. These are mechanisms of government failure, not just administrative inconvenience.
A limitation does not prove that no intervention should occur. Compare its likely size with the original market failure and consider whether a better-designed, better-resourced or more enforceable measure changes the balance.
Why intervene in labour markets?
Government intervention has a case when labour-market outcomes reflect market failure or exploitation rather than only differences in worker productivity and preferences.
| Labour-market problem | Possible consequence | Policy aim |
|---|---|---|
| monopsony power | wage and employment below competitive levels | protect bargaining power and minimum conditions |
| occupational/geographical immobility | vacancies coexist with structural unemployment | reduce skill, information, housing and transport barriers |
| discrimination/exploitation | unequal access, pay or unsafe conditions unrelated to productivity | enforce equal treatment and labour standards |
| information gaps | workers and firms make poor training, vacancy or safety decisions | improve information and accountability |
| very low pay/high inequality | poverty and weak living standards despite work | set wage/tax rules while managing employment effects |
The case for action does not identify the correct instrument. A policy should target the actual failure and be judged against enforcement costs, behavioural responses, elasticities and possible loss of employment or incentives.
Government intervention in labour markets
| Intervention | Intended effect | Important qualification |
|---|---|---|
| minimum wage control | a binding floor raises pay for retained low-wage workers and may reduce exploitation | in a competitive market it can create excess labour supply; with monopsony it can raise both wage and employment up to a point |
| maximum wage control | a binding ceiling can compress top pay and inequality | may create labour shortage, weaker incentives or migration of scarce skills |
| direct taxes, including national insurance and corporation tax | finance services/benefits and change incentives, labour cost or investment returns | employee NI can affect labour supply; employer NI can affect hiring cost; corporation tax can affect investment and derived labour demand |
| measures reducing geographical immobility | housing/relocation support, transport and vacancy information connect workers to places with jobs | family ties, cost, time lags and poor targeting can limit movement |
| measures reducing occupational immobility | education, retraining, apprenticeships and careers information help workers enter growing occupations | training must match actual vacancies and takes time |
| measures reducing discrimination/exploitation | equal-treatment, safety, hours and employment rules protect access and conditions | monitoring is difficult and compliance cost can affect hiring |
Judge each policy by whether it is binding, whom it covers, labour-demand and labour-supply elasticities, enforcement, time horizon and the original market structure. The same minimum wage can have different employment effects in competitive and monopsonistic markets.
A statutory rule is not the same as an achieved outcome: evasion, informal work, reduced non-wage benefits, automation or weak enforcement can change who gains and loses.