entrepreneurship versus joblessness explaining the rise in self employment a large share of the workforce throughout the developing world is self employed and this proportion has increased in recent decades assessments of this development vary with pull factors such as high returns to capital contrasted with push factors such as barriers to more desirable salaried jobs using a long panel dataset from ghana we empirically investigate the changing structure of earnings in self employment relative to salaried work our analysis allows workers to sort into self employment for different reasons including expected earnings differentials and endogenous capital accumulation whilst highlighting constraints that workers may face we estimate a correlated random coefficient model using iv gmm taking into account the endogeneity of sector choice and capital accumulation we find that returns to productive characteristics in self employment have increased significantly between 2004 and 2011 whilst self employment has attracted increasingly skilled workers this points against the negative view of self employment as an occupation of last resort

heterogeneity in informal salaried employment evidence from the egyptian labor market survey summary this paper contributes to the continuing debates on the mechanisms driving labor market informality in developing countries by proposing an innovative way to discriminate between segmented and competitive markets an empirical analysis is applied to egyptian paid employment in the highly dynamic context of 1998 2006 the study is based on recent nonparametric methods applied to estimate the model with essential heterogeneity the model is extended to decomposing the treatment effects into unobserved and observed components the results show triple heterogeneity of workers on the egyptian labor market offering support to both segmented and competitive views on informal labor

what determines productivity in senegal sectoral disparities and the dual labour market abstract this paper analyses the output gap between the formal and informal sectors in senegal using a matched employer employee database while the production process in some informal sub sectors is similar to the one in the formal sector there is evidence that the economy is deeply cleaved between productive and non productive firms within the informal sector and between voluntary and involuntary jobs on a labour market which proves to be dual we find that education externalities are significant although modest in both sectors and that the differences in human and physical capital account for about two thirds of the output gap

entrepreneurship selection and performance a meta analysis of the impact of education in developing economies this meta analytical review of empirical studies of the impact of schooling on entrepreneurship in selection and performance in developing economies looks at variations impact across specific characteristics of the studies a marginal year of schooling in developing economies raises enterprise income by an average of 5 5 percent which is close to the average return in industrial countries the return varies however by gender rural or urban residence and the share of agriculture in the economy furthermore more educated workers typically end up in wage employment and prefer nonfarm entrepreneurship to farming the education effect that separates workers into self employment and wage employment is stronger for women possibly stronger in urban areas and also stronger in the least developed economies where agriculture is more dominant and literacy rates are lower

buying less but shopping more the use of nonmarket labor during a crisis households allocating time between market and non market uses should respond to income variations by adjusting the time devoted to shopping search and other home production activities in this paper we exploit high frequency household expenditure data to examine the use of changes in shopping intensity as a method of mitigating the effects of the 2002 argentine economic crisis although the total quantity and real value of goods purchased fell during the crisis consumers are found to be doing more shopping search this increase in shopping is shown to enable households to seek out lower prices and locate substitutes allowing a given level of expenditure to buy more goods the magnitude and prevalence of these effects suggest that this non market use of labor can be an important coping strategy for households during a recession

dual labor markets urban unemployment and multicentric cities a two sector model of urban employment is developed which focuses on the formation of a secondary sector in response to a primary sector demand shock the optimal location of this single firm sector is shown to give rise to a multicentric urban spatial structure conditions are then established under which the new labor market equilibrium involves both a decrease in unemployment and an increase in net income for those unemployed these results are extended to a case where all unemployment benefits are financed by local taxation of firms here it is shown that profit incentives may exist for the primary sector to subsidize entry of the secondary sector c 1997 academic press

sector choice multiple job holding and wage differentials evidence from poland this article uses data from poland to investigate the role played by wage differentials between the public and private sectors in influencing sector choice and the decision to moonlight standardising for worker characteristics and allowing for sector selection effects we find i a substantial private sector wage premium ii wage differentials are a significant determinant of sector choice and iii the desire to moonlight is particularly strong among those who face the greatest wage gap that is university educated employees

are unemployment and out of the labor force behaviorally distinct labor force states this paper tests the hypothesis that the classifications unemployed and out of the labor force are behaviorally meaningless distinctions this hypothesis is rejected distinct behavioral equations govern transitions from out of the labor force to employment and from unemployment to employment the evidence reported in this paper is broadly consistent with versions of search theory in which unemployment is a state that facilitates the job search process in an appendix we demonstrate that log concavity of the wage offer distribution implies that the exit rate from unemployment is an increasing function of the rate of arrival of job offers

how to achieve full electrification lessons from latin america electricity coverage in latin america has increased substantially in recent decades rising from 50 of the population in 1970 to more than 95 in 2015 growth however slowed in the 1990s as many countries experienced difficulties in extending their networks further in particular to serve those living in isolated and rural areas in spite of this the process of electrification was not interrupted and at the beginning of the 2010s decade most countries in the region were able to provide access to electricity to almost all of their populations in this paper we examine the main strategies used in latin america to increase coverage and argue that only a combination of policy efforts has made it possible to achieve the current situation we also examine the remaining obstacles at policy and institutional levels to achieving full coverage

hiv wages and the skill premium abstract the hiv epidemic has dramatically decreased labor supply among prime age adults in sub saharan africa using within country variation in regional hiv prevalence and a synthetic panel i find that hiv significantly increases the capital labor ratio in urban manufacturing firms the impact of hiv on average wages is positive but imprecisely estimated in contrast hiv has a large positive impact on the skill premium the impact of hiv on the wages of low skilled workers is insignificantly different from 0 and is strongly dampened by competition from rural migrants the hiv epidemic disproportionately increases the incomes of high skilled survivors thus increasing inequality

living like there s no tomorrow the psychological effects of an earthquake on savings and spending behavior abstract natural disasters impact economies not only through physical damages but also by affecting survivors emotionally and psychologically this can alter their economic behavior in ways that remain poorly understood we present a model of post disaster savings that reveals two opposing tendencies the need to self insure through increased savings and the drive to enjoy life while it lasts through increased spending we use panel datasets from china s sichuan province and isolate psychological impacts by focusing on those who lived in quake areas but did not themselves suffer damages or injuries although they did not bear economic losses they saved less spent more on alcohol and played majiang a chinese game more often suggesting that the no tomorrow tendency dominated over the precautionary tendency the magnitude of the savings rate impact a drop of 0 17 percentage points for each percent of distance closer to the epicenter is economically significant and persists in the medium term

life expectancy and human capital investments evidence from maternal mortality declines longer life expectancy should encourage human capital accumulation since a longer time horizon increases the value of investments that pay out over time previous work has been unable to determine the empirical importance of this life expectancy effect due to the difficulty of isolating it from other effects of health on education we examine a sudden drop in maternal mortality risk in sri lanka between 1946 and 1953 which creates a sharp increase in life expectancy for school age girls without contemporaneous effects on health and which also allows for the use of boys as a control group using additional geographic variation we find that the 70 reduction in maternal mortality risk over the sample period increased female life expectancy at age 15 by 4 1 female literacy by 2 5 and female years of education by 4 0 authors

informal self employment and macroeconomic fluctuations article i nfo article history informal self employment is a major source of employment in developing countries its cyclical behavior is important to our understanding of the functioning of ldc labor markets but turns out to be surprisingly complex we develop a flexible model with two sectors a formal salaried tradable sector that may be affected by wage rigidities and an informal non tradable self employment sector faced with liquidity constraints to entry this labor market is then embedded in a standard small economy macro model we show that different types of shocks interact with different institutional contexts to produce distinct patterns of comovement between key variables of the model relative salaried self employed incomes relative salaried self employed sector sizes and the real exchange rate model predictions are then tested empirically for argentina brazil colombia and mexico we confirm episodes where the expansion of informal self employment is consistent with the traditional segmentation views of informality however we also identify episodes where informal self employment behaves pro cyclically here informality is driven by relative demand or productivity shocks to the non tradable sector

segmentation in the brazilian labor market abstractthis article measures the degree of segmentation in the brazilian labor market controlling for observable and unobservable characteristics workers earn more in the formal sector which supports the segmentation hypothesis we break down the degree of segmentation by socioeconomic attributes to identify the groups where this phenomenon is more prevalent we also investigate the robustness of our findings to the inclusion of self employed individuals

the impact of unconditional cash transfer on fuel choices among ultra poor in pakistan quasi experimental evidence from the benazir income support program abstract we analyze the impact of the unconditional cash transfer program namely the benazir income support program bisp on fuel choices among ultra poor in pakistan using two rounds of household level data collected in 2011 and 2016 the analysis based on regression discontinuity design shows that bisp cash transfer has a significant impact on interfuel substitution cash transfer increases the use of modern fuels among bisp beneficiaries besides cash transfer also encourages the use of intermediate fuels even in some cases traditional fuels cash transfer also increases the share of fuel expenses in total household expenses therefore the fuel stacking theory provides a better explanation of interfuel substitution than the energy ladder theory of the cash transfer program the provincial analysis shows that interfuel substitution exists due to cash transfer but varies from province to province signifying the role of regional heterogeneities the net impact on fuel choices may depend on the availability of different fuel components from policy perspective the expansion of the cash transfer program as planned by the government would require a reasonable investment in the energy sector to ensure an uninterrupted supply of modern fuels

sexually transmitted infections sexual behavior and the hiv aids epidemic forty million people are infected with hiv worldwide twenty five million of them are in sub saharan africa this paper addresses the question of why africa has been so heavily affected by hiv and what explains the variation within africa i present a model that decomposes epidemic level into differences in sexual behavior and differences in viral transmission rates i argue using evidence drawn from the existing medical literature that africa has very high hiv transmission rates likely due to high rates of other untreated sexually transmitted infections while transmission rates in the united states are low the difference in transmission rates is large enough to explain the observed difference in prevalence between the united states and sub saharan africa the model also provides a good fit to cross country data within africa and suggests that in contrast to the intracontinental results differences within that continent can be attributed to differences in sexual behavior and epidemic timing the results suggest that cost effective policy interventions would focus on decreasing transmission rates within africa possibly by treating other untreated sexually transmitted infections authors

labour market segmentation in cameroonian manufacturing the economic crisis in cameroon has provided a test for distinct causes of labour market segmentation many firms that previously followed rigid legislation have ceased to do so while a traditional informal sector has continued outside almost all regulation we categorise workers as informal formal or regulated by firm characteristics and test for labour market segmentation between these sectors direct legislation is the most significant cause of segmentation we find limited evidence that the costs of becoming formal create rationing in formal sector jobs while addressing both sets of rigidities would have maximum impact on unemployment in cameroon reforming direct labour legislation is likely to have the most beneficial short term impact

how will energy demand develop in the developing world most of the medium run growth in energy demand is forecast to come from the developing world which consumed more total units of energy than the developed world in 2007 we argue that the main driver of the growth is likely to be increased incomes among the poor and near poor we document that as households come out of poverty and join the middle class they acquire appliances such as refrigerators and vehicles for the first time these new goods require energy to use and energy to manufacture the current forecasts for energy demand in the developing world may be understated because they do not accurately capture the dramatic increase in demand associated with poverty reduction

the role of the informal sector in the early careers of less educated workers abstract does work experience gained in the informal sector affect the career prospects of less educated workers this paper examines two roles that informal sector jobs play in the early stages of a worker s career informal jobs may i provide the opportunity to accumulate skills and ii act as a screening device that enables employers to learn a worker s ability the paper develops a matching model of the informal and formal sectors that can accommodate both roles implied hazard rates from informal to formal sectors as a function of tenure are shown to differ depending on the role of informal sector jobs human capital accumulation or screening using the enoe a longitudinal employment survey from mexico hazard functions are estimated for less educated workers the estimated hazard functions indicate that informal sector jobs play an important role by screening young less educated workers

the informal sector wage gap new evidence using quantile estimations on panel data abstractwe estimate the informal formal sector pay gap throughout the conditional wage distribution using panel data from brazil mexico and south africa we control for time invariant unobservables and identification stems from intersector movers we control for observables in a nonlinear way using propensity score reweighting and carefully check for potential measurement errors using similar definitions of informality we obtain consistent results for all three countries informally employed workers earn much less than formal workers primarily because of lower observable and unobservable skills estimates of the conditional wage gap show that they are also underpaid compared to their formal sector counterparts in all three countries the informal wage penalty is larger in the lower part of the conditional distribution and tends to disappear at the top i e the informal sector increases wage dispersion the magnitudes of these effects vary across countries with the largest penalties in lower cond

urbanization informal sector and development abstract urbanization is a universal phenomenon in the postwar world but its qualitative nature is varied across countries some nations have experienced urbanization that accompanied skill upgrading industrialization and the expansion of the urban formal modern sector but others urbanized without such modernization and underwent the expansion of the urban informal traditional sector simultaneously the question that naturally arises is what are the underlying causes for the differences the purpose of the paper is to tackle this question analytically based on a dynamic model of urbanization and development

wage discrimination across ethnic groups evidence from israel i introduction wage differentials and occupational segregation have been intensively studied and well documented in the economic literature empirical analyses have demonstrated differences by gender and ethnicity and theoretical studies have attempted to explain the results polachek 1975 1993 leads the group that emphasizes human capital differences in explaining wage differences and segregation while bergmann 1974 1986 is in the forefront of a second group of scholars who claim that discrimination is the major source of inequality of wages and occupations in the united states race differentials in earnings and racial segregation decreased dramatically during the 1960s and the 1970s but sex differentials did not in 1980 the duncans 1955 segregation index calculated by fuchs 1989 across 503 occupations was about 30 for blacks versus whites and about 60 for men versus women 1 fuchs 1989 also showed that by 1980 the wage differential between white and black men 15 percent was less than half the difference between white men and white women 40 percent polachek and siebert 1993 137 39 present data showing that in 1990 the pay of u s women averaged 65 to 90 percent of that of men depending on the occupational category the gap has been relatively constant but there is some evidence that it has been narrowing in recent years they also find that earning ratios by occupation in the u k are very similar to parallel ratios in the u s chiswick 1983a 1983b and carlson and swartz 1988 among others examine earnings of ethnic minorities they find that most ethnic groups fare quite poorly compared to the white population but a few minorities jews chinese and japanese do as well or even better than the white majority the earnings gap for most groups declined over the 1960s and the 1970s and the portion of that gap that might be assignable to discrimination also declined in this study we examine ethnic wage differentials discrimination and segregation in the israeli labor market israel provides a tailor made setting for ethnic studies since its jewish population 4 335 million in 1993 consists of people with a large diversity in their countries of origin the first wave of jewish immigrants following the establishment of the state of israel in 1948 were holocaust survivors from europe or refugees from the predominantly moslem countries of north africa the middle east and yemen others came from north and south america western europe south africa and australia to live a more meaningful jewish life in the homeland israel encouraged and assisted these immigrants as part of an active pro immigration ideology and policy the main wave of immigration arrived in the late 1940s and early 1950s as friedlander 1975 shows between 1948 and 1952 the jewish population in israel increased from about 630 000 to nearly one and a half million an annual average growth rate of over 24 percent later there were three significant waves of immigration the first occurred at the beginning of the 1960s with annual immigration reaching an average of 57 000 per year an increase of 2 percent per year in population the second occurred in 1972 73 when 55 000 immigrants arrived annually an annual population increase of 1 7 percent the third large wave began in august 1989 with a massive influx of immigrants from the former u s s r generating about a 10 percent increase in the population in the years 1990 93 the absolute figures are 199 516 immigrants in 1990 176 100 in 1991 77 057 in 1992 and 66 145 in 1993 israel central bureau of statistics 1994 in 1991 about 15 000 ethiopian jews also arrived in israel the major ethnic division in israel is based on the country of origin although jews of various origins speak a number of different languages and perceive themselves as having some distinctive ethnic characteristics the main distinction is between jews originating from asia and africa excluding south africa easterners and those from america europe south africa and australia westerners

mortality risk and human capital investment the impact of hiv aids in sub saharan africa abstract over the past several decades the hiv aids epidemic has dramatically altered patterns of morbidity and mortality in sub saharan africa with potential consequences for human capital investment and economic growth using data from demographic and health surveys for fifteen countries in sub saharan africa i estimate the relationship between regional hiv prevalence and the change in individual human capital investment over time consistent with a simple model of human capital investment incorporating mortality risk i find that areas with higher levels of hiv experienced relatively larger declines in schooling

a competitive model of the informal sector abstract in developing nations formal workers tend to be more experienced more educated and earn more than informal workers these facts are often interpreted as evidence that low skill workers face barriers to entry into the formal sector yet there is little empirical evidence that such barriers are important this paper describes a model where in equilibrium the characteristics of formal and informal workers differ systematically even though labor markets are perfectly competitive the informal sector emphasizes low skill work as in the data because informal managers have access to less outside financing and choose to substitute low skill labor for physical capital

disease and development evidence from hookworm eradication in the american south this study evaluates the economic consequences of the successful eradication of hookworm disease from the american south the hookworm eradication campaign c 1910 began soon after i the discovery that a variety of health problems among southerners could be attributed to the disease and ii the donation by john d rockefeller of a substantial sum to the effort the rockefeller sanitary commission rsc surveyed infection rates in the affected areas eleven southern states and found that an average of forty percent of school aged children were infected with hookworm the rsc then sponsored treatment and education campaigns across the region follow up studies indicate that this campaign substantially reduced hookworm disease almost immediately the sudden introduction of this treatment combines with the cross area differences in pre treatment infection rates to form the basis of the identification strategy areas with higher levels of hookworm infection prior to the rsc experienced greater increases in school enrollment attendance and literacy after the intervention this result is robust to controlling for a variety of alternative factors including differential trends across areas changing crop prices shifts in certain educational and health policies and the effect of malaria eradication no significant contemporaneous results are found for adults who should have benefited less from the intervention owing to their substantially lower prior infection rates a long term follow up of affected cohorts indicates a substantial gain in income that coincided with exposure to hookworm eradication i also find evidence that eradication increased the return to schooling

labor market integration in urban ethiopia 1994 2004 abstractan analysis of panel data on individuals in a random selection of urban households in ethiopia reveals large sustained and unexplained earnings gaps between public and private and formal and informal sectors over 1994 2004 at the same time we find first that the rate of mobility increased in the two pairs of sectors sample transitions rates grew across survey waves while state dependence in sector choice decreased second the correlation between sector choice and earnings gaps increased over the same period in particular the correlation between comparative earnings and selection into the informal sector was high throughout the survey decade and increased in magnitude over the second half of the period these results suggest that ethiopia s urban labor markets might be integrating

pension design with a large informal labor market evidence from chile this article investigates the fiscal and welfare trade offs involved in designing a pension system when workers can avoid contributing by working informally using a life cycle model of labor supply and saving decisions i structurally estimate preferences and earnings opportunities in the formal and informal sectors using data on chilean households i find limited support for formal jobs rationing instead mandatory pension contributions significantly encourage informality policy experiments show that chile could lower minimum pension spending by 23 while guaranteeing the same income to retirees if the minimum pension s implicit tax rate was increased to 60

formal measures of the informal sector wage gap in mexico el salvador and peru using comparable micro level data from three countries we ask what type of person works in the informal sector and whether informal workers earn lower wages than observationally equivalent workers in the formal sector the characteristics of informal workers are similar across countries surprisingly when we control for these personal characteristics we find a significant wage premium associated with formal employment in el salvador and peru but a premium associated with work in the informal sector in mexico a model of endogenous selection offers little help in explaining the differences in wage patterns the research casts doubt on the received wisdom that the informal sector always and everywhere is a poorly paid but easily entered refuge for those who have no other employment opportunities this abstract was borrowed from another version of this item

private health investments under competing risks evidence from malaria control in senegal this study exploits the introduction of high subsidies for anti malaria products in senegal in 2009 to investigate if malaria prevents parents to invest in child health building upon the seminal paper of dow et al 1999 we develop a simple model of health investments under competing mortality risks in which people allocate expenses to equalize lifetime across all causes of death we predict that private health investments to fight malaria as well as other diseases should increase in response to anti malaria public interventions to test this prediction we use original panel data from a senegalese household survey combined with geographical information on malaria prevalence our strategy is to compare the evolution of child health expenditures before and after anti malaria interventions between malarious and non malarious regions of senegal we find that health expenditures in malarious regions catch up with non malarious regions at the extensive and intensive margins and both in level and in composition the same result holds for parental health seeking behavior in case of other diseases like diarrhea we provide evidence that these patterns cannot be explained by differential trends in total income or access to healthcare or child morbidity between malarious and non malarious regions our results suggest that behavioral responses to anti malaria campaigns magnify their impact on all cause mortality for children

the gift of the dying the tragedy of aids and the welfare of future african generations this paper simulates the impact of the aids epidemic on future living standards in south africa i emphasize two competing effects on the one hand the epidemic is likely to have a detrimental impact on the human capital accumulation of orphaned children on the other hand widespread community infection lowers fertility both directly through a reduction in the willingness to engage in unprotected sexual activity and indirectly by increasing the scarcity of labor and the value of a woman s time i find that even with the most pessimistic assumptions concerning reductions in educational attainment the fertility effect dominates the aids epidemic on net enhances the future per capita consumption possibilities of the south african economy

child income appropriations as a disease coping mechanism consequences for the health education relationship this paper analyses the relationships between hiv aids and education taking into account the appropriative nature of child income using a theoretical model we show that considering remittances from one s child as an insurance asset can reverse the usual negative relationship between disease prevalence and educational investment this prediction confirms the results of an empirical study conducted on data compiled from the demographic and health survey dhs database for 12 sub sahara african countries for children aged between 7 and 22 years old using regional hiv prevalence as a measure of health risk we find that the sign of the slope between health risk and the enrolment of children is not constant splitting the data based on expected remittance patterns for example rural versus urban we obtain that the effect is most likely driven by household characteristics related to child income appropriation

households grocery shopping behavior in the short run theory and evidence this paper extends the study of nonmarket work activities to explain the impact of household characteristics on grocery shopping behavior a constrained utility maximization model is developed and the equilibrium conditions of the model are derived these conditions and the hypotheses implied by them relating to the determinants of time spent in a grocery shopping trip the size of a purchase and the number of such trips within a given period of time were tested using data from a sample which identified the household characteristics of grocery shoppers in these tests using two stage least squares the theoretical implications of our simultaneous equations model are significantly supported

labor market segmentation and the determination of wages in the public private formal and informal sectors in san jose costa rica a striking feature of many cities in less developed countries ldcs is the coexistence of large well organized high technology firms with the small street vendors who own little but a wooden box to sit on this apparent dualism in the urban economy has been a concern of students of economic development for many years several international agencies notably the international labour organisation ilo and the world bank have focused attention on this phenomenon the ilo popularized the terms formal sector and informal sector to describe this dichotomy to many economists one consequence of this dualism is labor market segmentation labor market segmentation plays a crucial role in explanations provided for some important issues such as rural urban migration urban poverty unemployment underemployment and growth 2 in this article i examine the hypothesis that labor market segmentation exists in san jos6 costa rica between the public and private formal sectors and between the privateformal and informal sectors defined in the appendix i define labor market segmentation as a situation where because of institutional barriers to occupational mobility between sectors a worker in the lower sector has less than full access to a job in the upper sector held by an observationally identical worker 3 if there were no barriers workers in the low wage sector would enter the high wage sector and force the wages in that sector down until wages across sectors were equalized that is labor market segmentation implies differences in wages for observationally identical workers relying on this inference most of the empirical literature on labor market segmen

limited life expectancy human capital and health investments human capital theory predicts that life expectancy will impact human capital attainment we estimate this relationship using variation in life expectancy driven by huntington disease an inherited neurological disorder we compare investments for individuals who have ex ante identical risks of hd but differ in disease realization individuals with the hd mutation complete less education and job training the elasticity of demand for college attendance with respect to life expectancy is around 1 0 we relate this to cross country and over time differences in education we use smoking and cancer screening data to test the corollary that health capital responds to life expectancy

the impact of a social program on labor informality the case of auh in argentina abstract the recent universal child allowance program in argentina provides monthly cash transfers to unregistered workers with children as the program is accessible only to those who are not in formal employment it may discourage workers transitions to the formal sector in this paper we estimate this effect by comparing the transitions to registered jobs of eligible workers with children with a similar but not eligible group without children over time the results suggest a statistically significant and economically large disincentive to the labor market formalization of the program beneficiaries in contrast there is no sufficient evidence for the existence of a significant incentive for registered workers to become informal

wages and informality in developing countries we develop an equilibrium wage posting model with heterogeneous firms that decide to locate in the formal or the informal sector and workers who search randomly on and off the job we estimate the model on brazilian labor force survey data in equilibrium firms of equal productivity locate in different sectors a fact observed in the data wages are characterized by compensating differentials we show that tightening enforcement does not increase unemployment and increases wages total output and welfare by enabling better allocation of workers to higher productivity jobs and improving competition in the formal labor market jel e26 j24 j31 j46 o15 o17

informal employment in developing countries opportunity or last resort there is an ongoing debate among researchers and policy makers whether informal sector employment is a result of competitive market forces or labor market segmentation more recently it has been argued that none of the two theories sufficiently explains informal employment but that the informal sector shows a heterogenous structure for some workers the informal sector is an attractive employment opportunity whereas for others rationed out of the formal sector the informal sector is a strategy of last resort to test the empirical relevance of this hypothesis we formulate an econometric model which allows for several unobserved segments within the informal sector and apply it to the urban labor market in cote d ivoire

evaluating the econometric evaluations of training programs with experimental data this paper takes the results of an employment and training program thatwas run as a field experiment in which the participants were randomlyassigned into a treatment or a control group and compares these results to the estimates that might have been produced by an econometrician who evaluated the program using the same econometric procedures that have been used in the program evaluation literature this comparison shows that many of these econometric procedures fail toreplicate the experimentally determined results and suggests that researchers should be aware of the potential for specification errorsin other nonexperimental evaluations copyright 1986 by american economic association

the importance of bundling in a gorman lancaster model of earnings the idea that the labor market of individuals can be decomposed into payments to separate productive attributes has an enduring appeal in economics assuming that demographic groups differ only in their endowments of productive characteristics it is possible to rationalize observed demographic earnings differentials without invoking the arguments that characteristics specific to a particular demographic group are direct objects of employer demand by aggregating skills over all demographic groups it is possible to produce a theory of the market determination of the prices of skills held in different amounts by different demographic groups this paper considers conditions under which characteristics are uniformly priced across sectors of a multisector economy the paper presents empirical evidence that rejects uniform pricing of characteristics as a description of the us labor market bundling may account for this evudence but other hypotheses do as well authors

modelling the informal sector formally abstract the theoretical characterization of formal informal sector dualism by labor market dualism is integrated with its empirical characterization by size dualism by supposing that the minimum formal sector wage is only enforced for firms greater than a certain size a firm s size varies directly with the talent of its enterpreneur manager and the choice between formal and informal sector entrepreneurship is determined endogenously it is then shown that the size gap between the smallest formal sector firm and largest informal sector firm varies directly with the formal informal sector wage differential which in turn is shown as expected to increase the further is the minimum wage above the market clearing wage the comparative statics of changes in the size of the firm above which the minimum wage is enforced are also examined

startup costs and the decision to switch from firewood to gas fuel firewood remains a key source of energy for households in developing countries contributing to forest degradation and deforestation the adoption of alternative fuels may be hindered by high startup costs and this problem may be compounded by restrictions in credit availability we use survey data to examine how credit access affects firewood consumption in guatemala our results suggest that access to credit plays a statistically significant role in determining firewood consumption through its effect on the ability to purchase a gas stove however simulations suggest that these effects are small and that subsidizing stoves would be amore promising policy for reducing firewood consumption

economic booms and risky sexual behavior evidence from zambian copper mining cities existing studies suggest that individual and household level economic shocks affect the demand for and supply of risky sex however little evidence exists on the effects of an aggregate shock on equilibrium risky sexual behavior this paper examines the effects of the early twenty first century copper boom on risky sexual behavior in zambian copper mining cities the results suggest that the copper boom substantially reduced rates of transactional sex and multiple partnerships in copper mining cities these effects were partly concentrated among young adults and copper boom induced in migration to mining cities appears to have contributed to these reductions

mobility in the urban labor market a panel data analysis for mexico abstract we analyze mobility in urban mexico between three labor market states working in the formal sector working in the informal sector and not working a dynamic multinomial logit panel data model with random effects is used explaining the labor market state of each individual during each time period the data are drawn from mexico s urban employment survey a quarterly household survey for urban mexico while some of the descriptive statistics suggest that informal sector jobs are inferior to formal sector jobs formal tests cannot reject the null hypothesis of equal transition rates between formal and informal sector jobs for homogeneous groups of workers looking at entry and exit into and out of nonemployment we find that transitions from formal sector jobs to nonemployment were less likely than transitions from informal sector jobs to nonemployment in 1992 but not in 1999 suggesting that employment protection in the formal sector has been reduced

segmented or competitive labour markets a normal roy model with four sectors is developed it allows to derive tests of several assumptions on the working of the labor market strongly or weakly competitive or segmented it shows that more important a feature of labor markets than segmentation is the presence of comparative advantages for individuals between the various economic sectors the model is applied to data on women s labor force participation in the main towns of colombia in 1980 it uses multivariate probit and tobit techniques copyright 1991 by the econometric society

informal employment in developing economies multiple heterogeneity abstractthis paper contributes to the literature on the nature of informal employment in developing economies drawing on the model with essential heterogeneity it offers a list of scenarios describing the behavioural patterns which informal workers follow the list nests not only classical patterns of a rationed formal sector versus an integrated labour market but also different patterns of rationing using non parametric techniques and data from a few african economies with different levels of development the paper proposes empirical case studies fitting various informality schemes developing economies show disparate patterns of allocation of workers and various patterns of rationing

mobility and the return to education testing a roy model with multiple markets self selected migration presents one potential explanation for why observed returns to a college education in local labor markets vary widely even though u s workers are highly mobile to assess the impact of self selection on estimated returns this paper first develops a roy model of mobility and earnings where workers choose in which of the 50 states plus the district of columbia to live and work available estimation methods are either infeasible for a selection model with so many alternatives or place potentially severe restrictions on earnings and the selection process this paper develops an alternative econometric methodology that combines lee s 1983 parametric maximum order statistic approach to reduce the dimensionality of the error terms with more recent work on semiparametric estimation of selection models e g ahn and powell 1993 the resulting semiparametric correction is easy to implement and can be adapted to a variety of other polychotomous choice problems the empirical work which uses 1990 u s census data confirms the role of comparative advantage in mobility decisions the results suggest that self selection of higher educated individuals to states with higher returns to education generally leads to upward biases in ols estimates of the returns to education in state specific labor markets while the estimated returns to a college education are significantly biased correcting for the bias does not narrow the range of returns across states consistent with the finding that the corrected return to a college education differs across the u s the relative state to state migration flows of college versus high school educated individuals respond strongly to differences in the return to education and amenities across states

kinship ties social networks and segmented labor markets evidence from the construction sector in egypt abstract this paper tests for rationing of entry into craft occupations in the construction labor market in egypt and investigates whether entry is rationed according to regional origin and access to kinship and other social networks i use a modified version of roy s model of occupational choice which allows for the existence of costs of entry into craft occupations data from a 1988 survey of construction workers are used to estimate the model and test for rationing the results confirm the existence of rationing according to a worker s regional background but are inconclusive with respect to kinship ties and social networks

household labor supply in urban areas of bolivia we analyze labor supply behavior and the choice between formal and informal sector work of the two spouses in families in urban areas of a developing country using cross section data from bolivia drawn in 1989 the model generalizes the neoclassical family labor supply model nonmonetary returns of formal sector employment capture the fact that the choice between sectors is not exclusively based on wage differentials wage equations nonmonetary returns equations and labor supply equations are estimated jointly by smooth simulated maximum likelihood we find substantial cross wage elasticities of working hours of both partners and large substitution elasticities between the two sectors

modeling informality formally households and firms i introduction recent estimates indicate that around 10 of gross domestic product gdp in the united states is produced by individuals or firms that evade taxes schneider and enste 2000 in latin america approximately 50 of all salaried employees work informally an important question is therefore what are the determinants of informality unfortunately three decades of research have not yet yielded a consensus opinion on this point the traditional explanation initiated with the work of lewis 1954 assumes the existence of segmented labor markets in which some workers do not have access to jobs in the regulated formal sector these workers are forced to accept lower paying informal sector jobs that usually involve inferior working conditions while this view has become prevalent in the development literature direct empirical tests of the premise that informal workers would expect higher wages in the formal sector yield mixed results for instance magnac 1991 maloney 2004 and pratap and quintin 2004 do not find compelling evidence of segmentation between the formal and the informal sectors using data from colombia mexico and argentina respectively it is nonetheless certainly plausible that the presence of unions might segment the labor market layard et al 1991 however even if we believe that unionization has been an important factor in determining labor market segmentation in the past the pronounced decline of unionization throughout latin america over the last two decades seems to be a less satisfactory explanation of the phenomenon at the present time especially since informality increased in most countries in latin america during the same period gasparini and tornarolli 2006 another approach emphasizes the role of labor market regulation and taxation as the main cause of informality a pioneering study by de soto 1989 describes how informal workers develop their own laws and institutions to make up for the shortcomings of the official legal system it is certainly true that the size of the shadow economy is affected by the burden of taxes and social security contributions as well as by the many other regulations governing the official economy the problem with adopting this explanation of informality unreservedly however is that it overlooks the fact that workers have nonpecuniary preferences for the sector they work for and these preferences play a role in determining the equilibrium level of formality of an economy in particular workers in the informal sector are not eligible for socially mandated benefits three stylized facts characterize informality 1 small firms tend to operate informally while large firms tend to operate formally 2 unskilled workers tend to be informal while skilled ones have formal jobs 3 ceteris paribus secondary workers a worker other than the household head are less likely to operate formally than primary workers in this paper we present a model of an economy in which the sizes and wages of the formal and informal sectors are endogenously determined that accounts for these three facts our model entails a continuum of types on both sides of the labor market i e firms and workers firms choose whether to operate formally or informally and workers choose in what sector they work in equilibrium managerial talent determines size dualism at the firm level and human capital is the factor that determines whether workers are employed in the formal or informal sector in our model both heterogeneous firms and workers have preferences over the sectors they operate and choose optimally whether to function formally or informally by contrast a prominent feature of the preexisting literature is the idea that workers decisions play no role in determining the equilibrium of the economy thus our model is the first one in which policies that affect workers preferences as well of course as firm preferences over the formal or the informal sector such as pension plans public health issues and unemployment and any social benefits will affect the sizes and wages of the formal and the informal sectors

double penalty in returns to education informality and educational mismatch in the colombian labour market abstractthis article examines the returns to education taking into consideration the existence of educational mismatches in the formal and informal employment of a developing country results show that the returns of surplus required and deficit years of schooling are different in the two sectors moreover they suggest that these returns vary along the wage distribution and that the pattern of variation differs for formal and informal workers in particular informal workers face not only lower returns to their education but suffer a second penalty associated with educational mismatches that puts them at a greater disadvantage compare to their formal counterparts

are there dual labor markets in chile empirical evidence abstract in this paper we use a switching regression method to test the hypothesis that segmentation in the chilean labor market exists the results support the labor segmentation hypothesis and consequently they contradict those of corbo and stelcner 1983 the explanation for this is that we do not make any a priori definition of the population as corbo and stelcner do in fact our results show that any a priori definition of the sample will lead to rejecting the segmentation hypothesis

the white black educational gap stalled progress and the long term consequences of the emergence of crack cocaine markets abstract we propose the rise of crack cocaine markets as a key explanation for the end to the convergence in black white educational outcomes in the united states that began in the mid 1980s after constructing a measure to date the arrival of crack markets in cities and states we show that the decline in educational outcomes for black males begins with the start of the crack epidemic we also show that there are higher murder and incarceration rates after the arrival of crack cocaine and that these are predictive of lower black high school completion rates a result consistent with human capital theory we estimate that effects related to crack markets can account for approximately 40 to 70 of the fall in black male high school completion rates

the effects of rural electrification on employment new evidence from south africa this paper estimates the impact of electrification on employment growth by analyzing south africa s mass roll out of electricity to rural households using several new data sources and two different identification strategies an instrumental variables strategy and a fixed effects approach i find that electrification significantly raises female employment within five years this new infrastructure appears to increase hours of work for men and women while reducing female wages and increasing male earnings several pieces of evidence suggest that household electrification raises employment by releasing women from home production and enabling microenterprises migration behavior may also be affected jel h54 l94

the formal sector wage premium and firm size abstract we show theoretically that when larger firms pay higher wages and are more likely to be caught defaulting on labor taxes then large high wage firms will be in the formal and small low wage firms will be in the informal sector the formal sector wage premium is thus just a firm size wage differential using data from ecuador we illustrate that firm size is indeed the key variable determining whether a formal sector premium exists

the monthly food stamp cycle shooping frequency and food intake decisions in an endogenous switching regression framework mean food spending by food stamp households peaks sharply in the first three days after benefits are received for those who conduct major grocery shopping trips only once per month 42 of all food stamp households mean food energy intake drops significantly by the fourth week of the month for the remaining households intake remains steady over the course of the month these patterns motivate an empirical model that simultaneously accounts for the shopping frequency and food intake decisions over time results have implications for policies that may affect the frequency of grocery shopping by food stamp households

formal but less equal gender wage gaps in formal and informal jobs in urban brazil in developing countries a large share of employees work informally and are not covered by employment protection legislation i study here how gender wage inequality differs across formal and informal jobs in brazil the raw gender wage gap is higher in informal jobs 13 compared to formal jobs 5 but i show that this difference is an artefact of different male and female selection processes first women have better observable characteristics than men and the female advantage is stronger among formal employees second men and women entering formal and informal jobs have different unobservable characteristics controlling for endogenous selection into formal vs informal jobs i find that the gender gap in wage offers is high and increases with education in formal jobs in informal jobs however estimated wage offers are the same for men and women i discuss the potential implications of these findings regarding the effect of labour market regulation on gender wage gaps

heteroskedastic sample selection and developing country wage equations many researchers have dealt with potential selectivity bias in developing country wage equations by employing heckman s 1979 two step method or related techniques despite the potential for such methods to produce misleading results if the assumptions on which they are based are incorrect this paper argues that the results produced even by parametric easy to implement selectivity bias correction methods can inspire more confidence than the typical applications to date when model selection testing is used to select from a specified diverse set assumptions for which there is support in the data and when sensitivity analysis is used to identify parameters whose estimates are robust across a wide range of assumptions in particular it highlights the importance of allowing for the nonlinearities implied by selection rule heteroskedasticity there is economic reason to suspect heteroskedasticity and econometric reason to believe that the nonlinearities it introduces into the first stage will improve

aids mortality and its effect on the labor market evidence from south africa abstract this paper investigates how hiv aids has impacted the labor market in south africa focusing on its effect on wages and employment this is done by matching individual level data with group specific cumulative aids mortality rates exploiting the panel nature of the data i remove individuals whose productivity is most likely impacted by hiv aids and find evidence that cumulative aids mortality has led to reductions in wages of between 3 and 6 for the african population group black south africans furthermore i also find evidence that the epidemic has lowered employment in south africa this result is concentrated among those with the lowest levels of education and employment although not large in magnitude these effects are widespread across a significant portion of the population contributing to a substantial loss of income throughout the south african economy

are labor markets segmented in developing countries a semiparametric approach abstract we test the hypothesis that observably similar workers earn higher wages in the formal sector than in the informal sector in developing nations using data from argentina s household survey and various definitions of informal employment we find that on average formal wages are higher than informal wages parametric tests suggest that a formal premium remains after controlling for individual and establishment characteristics however this approach suffers from several econometric problems which we address with semiparametric methods the resulting formal premium estimates prove either small and insignificant or negative neither do we find significant differences in measures of job satisfaction between the two sectors we invoke these results to question the mainstream view that labor markets are segmented along formal informal lines in developing nations such as argentina

taxation wage controls and the informal sector abstract in this paper we study the effects of taxation and wage controls in a developing economy with an informal sector for that purpose we build a model with firm heterogeneity in which a formal and an informal sector endogenously emerge in some productive branches of the economy based on the assumption that the marginal cost of tax and regulation evasion increases with the size of the firm our model offers an explanation for the observed discontinuity in the distribution of firms size the missing middle three forms of dualism scale wage and evasion consistent with market segmentation are obtained the model accounts for the presence of waiting unemployment that seems particularly pervasive in urban regions a computable general equilibrium cge model for cameroon is built incorporating these features various reforms of the tax and regulation system are simulated and their effects on the extent of the informal sector are analyzed

is there an informal employment wage penalty evidence from south africa abstract we estimate the wage penalty associated with working in the south african informal sector to this end we use a rich data set on non self employed males that allows one to accurately distinguish workers employed in the informal sector from those employed in the formal sector and link individuals over time implementing various econometric approaches we find that there is a gross wage penalty of a little over 18 for working in the informal sector however once we reduce our sample to a group for which we can reasonably calculate earnings net of taxes and control for time invariant unobservables the wage penalty disappears

an investigation of the labor market earnings of panamanian males evaluating sources of inequality this paper presents empirical evidence on the determinants of labor market earnings and inequality for males in panama using newly available microdata we estimate earnings equations based on the measurement framework of mincer 1974 and compare them with those for other countries at various stages of economic development we present evidence on two aspects of inequality in less developed economies labor market segmentation and social stratification we present tests of the segmentation hypothesis including several of the dual labor market hypotheses and discuss their inherent ambiguity we also present evidence on the importance of family background for earnings determination and educational attainment

introduction to the distribution of earnings and of individual output by a d roy this article summarises the lasting contribution of roy s 1950 fundamental paper roy a d 1950 the distribution of earnings and of individual output economic journal vol 60 239 pp 489 505

the effects of labour market policies in an economy with an informal sector in this article we build an equilibrium search and matching model of an economy with an informal sector our model extends mortensen and pissarides 1994 by allowing for ex ante worker heterogeneity with respect to formal sector productivity we use the model to analyse the effects of labour market policy on informal sector and formal sector output on the division of the workforce into unemployment informal sector employment and formal sector employment and on wages finally we examine the distributional implications of labour market policy specifically we analyse how labour market policy affects the distributions of wages and productivities across formal sector matches in this article we construct a search and matching model that we use to analyse the effects of labour market policies in an economy with a significant informal sector what we mean by an informal sector is a sector that is unregulated and hence not directly affected by labour market policies such as severance or payroll taxes we find that labour market policies that apply only to the formal sector nonetheless affect the size and the composition of employment in the informal sector this is important since there is substantial economic activity in the informal sector in many economies particularly in developing countries estimates for some latin american countries put the informal sector at more than 50 of the urban work force 1 the informal sector is also important in many transition countries as well as in some developed economies 2 although much of the literature treats the informal sector as a disadvantaged sector in a segmented labour market framework this interpretation is not consistent with recent empirical evidence from latin america under a segmented or dual labour market interpretation one would expect jobs to be rationed in the primary sector and workers to be in the secondary or informal sector involuntarily and to be queuing for formal sector jobs maloney 2004 presents evidence for several latin american countries that challenges this view and instead interprets the informal sector as an unregulated micro entrepreneurial sector similarly using data from the argentinian household survey pratap and quintin 2006 reject the notion that labour markets are segmented in the greater buenos aires area concluding that there is no evidence of a formal sector wage premium after controlling for individual and establishment we thank mauricio santamaria for stimulating conversations that inspired our interest in this topic we also thank bob hussey and fabien postel vinay as well as our editor steve pischke and two anonymous

rural industry and labor market integration in eastern china abstract this paper tests the competitiveness of the labor market in a semi industrialized county located in eastern china labor market segmentation is linked to the degree of government interventions and the management structures of the local enterprises and two forms of rationing labeled entrance and time rationing are identified a test based on income maximizing behavior is developed to find the form of rationing that is consistent with the data the results show that the labor market is not competitive and time rationing prevails in the county in addition industrial wages are not responsive to experience and education but strongly biased against women and varying to government interventions

segmentation and mobility of women in argentine labor markets este trabajo analiza la movilidad laboral de las mujeres en la argentina en 1995 2003 en 4 sectores formal informal desempleo e inactividad incorporamos medidas alternativas de movilidad laboral y estimamos un modelo logistico multinomial para la eleccion del sector los resultados son consistentes con la hipotesis de mercados laborales segmentados mujeres con estudios superiores incluso casadas y con hijos acceden mas facilmente al sector formal que mujeres menos educadas no madres experimentan menos obstaculos para moverse del sector informal al formal tener mas hijos aumenta la probabilidad de transicion del sector formal al informal y del informal a salir del mercado de trabajo

is the new immigration really so bad this article reviews the recent evidence on us immigration focusing on two key questions 1 does immigration reduce the labour market opportunities of less skilled natives 2 have immigrants who arrived after the 1965 immigration reform act been successfully assimilated overall evidence that immigrants have harmed the opportunities of less educated natives is scant on the question of assimilation the success of the us born children of immigrants is a key yardstick by this metric post 1965 immigrants are doing reasonably well even children of the least educated immigrant origin groups have closed most of the education gap with the children of natives

longevity and lifetime labor supply evidence and implications conventional wisdom suggests that increased life expectancy had a key role in causing a rise in investment in human capital i incorporate the retirement decision into a version of ben porath s 1967 model and find that a necessary condition for this causal relationship to hold is that increased life expectancy will also increase lifetime labor supply i then show that this condition does not hold for american men born between 1840 and 1970 and for the american population born between 1890 and 1970 the data suggest similar patterns in western europe i end by discussing the implications of my findings for the debate on the fundamental causes of long run growth

family structure and female labour supply in mexico city this paper investigates labour supply of the wives of the heads of households in mexico city with a focus on the impact of family structure a static neoclassical structural model is used we assume that each woman chooses her labour supply and corresponding income so that her utility is maximized conditional upon her husband s labour supply and earnings we use a direct translog specification and include family composition variables as taste shifters also taken into account are fixed costs of working nonlinear taxes unobserved preference variation prediction errors in wages of nonworkers and potential endogeneity of wages the models are estimated by smooth simulated maximum likelihood using data from mexico s urban employment survey drawn in 1992 we find income elasticities of labour supply of about 0 35 and wage elasticities of about 0 5 the latter is substantially overestimated if wage rate endogeneity is not taken into account the results are robust with respect to other specification choices we find that the impact of family structure variables on participation is different from that on hours worked so that their total effect is ambiguous

on defining and measuring the informal sector evidence from brazil summary recent debate on the reasons for the informal sector has led to renewed focus on how to operationalize the measurement of informal employment this paper investigates congruence between three empirical measures of the rate of informality using brazilian household survey data for the period 1992 2004 sixty three percent of the economically active are informal according to at least one definition but only 40 are informal according to all three regression analysis is used to shed further light on differences in these measures appropriate measurement is therefore of high significance to policy analysis and design of appropriate strategies to reduce informality

sectoral labour supply choice restrictions and functional form this is the authors submitted article version which is the pre peer reviewed version of the article the article changed title in the peer reviewing process from analyzing labor supply behavior with latent job opportunity sets and institutional choice constraints later published as discussion paper no 399 http brage bibsys no ssb handle urn nbn no bibsys brage 21006

consumption versus expenditure previous authors have documented a dramatic decline in food expenditures at the time of retirement we show that this is matched by an equally dramatic rise in time spent shopping for and preparing meals using a novel data set that collects detailed food diaries for a large cross section of u s households we show that neither the quality nor the quantity of food intake deteriorates with retirement status we also show that unemployed households experience a decline in food expenditure and food consumption commensurate with the impact of job displacement on permanent income these results highlight how direct measures of consumption distinguish between anticipated and unanticipated shocks to income whereas measures of expenditures obscure the distinction

hiv testing subjective beliefs and economic behavior this paper examines the effects of learning hiv status on economic behavior among rural malawians according to economic life cycle models if learning hiv results is informative about additional years of life being diagnosed hiv positive or negative should predict changes in consumption investment and savings behavior with important micro and macro economic implications using an experiment that randomly assigned incentives to learn hiv results i find that while learning hiv results had short term effects on subjective belief of hiv infection these differences did not persist after two years consistent with this there were relatively few differences two years later in savings income expenditures and employment between those who learned and did not learn their status

moving up the energy ladder the effect of an increase in economic well being on the fuel consumption choices of the poor in india abstract rising household wealth may potentially impact both total fuel consumption and fuel type composition resulting in significant health and environmental implications using data from a field experiment in india we explore the effects of a transfer program that provided poor rural households with greater levels of assets and cash total fuel consumption rose as a result of the transfers households shifted from using electricity rather than kerosene as their primary form of light but total kerosene consumption also rose in contrast we did not observe a shift to cleaner cooking fuels