Non-farm Occupational and Earnings Dynamics in Rural Thailand March 7 th, 2013 Applied Microeconomics Seminar, Monash University Chayanee Chawanote and.

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Non-farm Occupational and Earnings Dynamics in Rural Thailand March 7 th, 2013 Applied Microeconomics Seminar, Monash University Chayanee Chawanote and Christopher B. Barrett Cornell University

Motivation  The transition from agriculture to rural non-farm work is natural with economic development and population growth.  Because those in highly productive non-farm activities enjoy upward earnings mobility (Barrett, Reardon and Webb, 2001; Block and Webb, 2001; Lanjouw, 2001), gov’ts and donors increasingly promote RNFE self-employment for rural poverty reduction.  But the entrepreneurship literature also emphasizes the difficulty of firm expansion (Fafchamps 1994, Haggblade et al. 2007, de Mel et.al., 2008; Schoar, 2009). Most self-employment has no paid non-family workers and failure rates for those with employees are very high. Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Motivation  But the empirical literature on RNFE  relies heavily on (repeated) cross-sectional evidence. Only panel studies are not nationally representative (and only on Ethiopia).  fails to distinguish between self-employment w/ and w/o employees, thereby conflating ‘subsistence’ and ‘transformational’ enterpreneurs  largely ignores the interplay between “the distribution of income and wealth” and the dynamics of occupational choice” (Banerjee and Newman, 1993) and even less rarely addresses the prospective selection effects that conflate causal inference about the earnings effects of occupational transitions in rural areas  Literature on occupational transitions and conditional earnings mobility ( Cichello et al., 2005; Woolard and Klasen, 2005; and Fields et al., 2005) fails to address the rural farm-nonfarm transition. Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Research questions/contributions  What patterns of occupational transitions exist among farmers, non-farm employees, non-farm self-employed, and non-farm employers in rural Thailand ?  How do occupational transitions associate with directional earnings mobility? Does movement out of farming boost individual earnings, controlling for selection into occupations? Are all transitions into RNF equally desirable?  What causes these rural occupational transitions?  First use of the Thai SES since it became a panel. Introduce data and do necessary attrition analyses.  With four rounds over five years, we can use more robust methods to more confidently identify the effects of rural occupational transitions on earnings. Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Outline  Data and background  Definition of rural non-farm employment  Occupational transitions  Effects of occupational transitions on earnings  Determinants of occupational shifts  Conclusions Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Data  Thai Socio-Economic Survey (SES) panel data: 2005 – 2007, 2010  Household section: Information of HH members, HH characteristics and assets, income from agriculture  Members age 15+ section: Education, health care, employment, incomes, expenditures, financial status (debt & savings), migration  Initial survey: 6,000 households, 16,310 individuals (9,897 in rural)  Sample in 4 waves : 7,831 individuals in rural areas  4,090 individuals employed and aged between years  Correct for attrition weights in all regression analyses  Supplement with National Rural Development (NRD) village- level survey: 2005, 2007, 2009  General conditions and infrastructure of village, economic conditions, education and health Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Definition of rural non-farm employment Farmers: primary employment in agriculture, livestock, fishing and hunting Non-farm employers: own business and hire employees Non-farm self-employment: own business without paid employees Non-farm employees: wage or salary workers outside of agriculture Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Mean monthly earnings by quartiles and occupation Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Ordering of earnings in rural Thailand  All RNFE occupations’ earnings distributions first degree stochastically dominate farming.  NF employer’s and employee’s earnings distribution also first- order stochastically dominate NF self-employment’s  The most lucrative occupation, on average, is non-farm employer followed by non-farm employee, non-farm self- employment, and, last, farming. These patterns are replicated in the 2006, 2007 and 2010 data as well. Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Patterns of occupational transitions  Occupational transition matrix 2005/2010 Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Patterns of occupational transitions Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Multivariate estimation methodology  Conditional mobility models explore how earnings changes associate with farm and non-farm occupational shifts. Following Fields(2007) & Cichello et al. (2005), the model is:  Δ ln y it is the change in reported earnings.  y i,t-1 is previous year reported.  Z i denotes time-invariant variables, observed individual and household characteristics, in the initial year.  Δ X it denotes employment transition experiences – dummy variables for the 15 possible transitions – with staying in farm work as the reference case.  ϕ is individual (or sub-district) fixed effects. t is time effect and ε it is a mean zero, heteskedasticity-corrected, i.i.d error term. Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Conditional micro mobility models Summary statistics across occupational groups Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Conditional micro mobility models Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Robustness checks  Alternative models i) IV with predicted probabilities of multinomial logit of occupational shifts in 1 st stage ii) Multinomial logit model correcting for selection bias, following Dubin and McFadden (1984) and Bourguignon et al. (2007)  Add 1 st stage: determinants of occupational shifts Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Determinants of occupational shifts  Changes in unobservables could be driving both changes in earnings and changes in occupation:  Control for changes in village-level environment & infrastructure  Reduce prospective problems of reverse causation, omitted unobserved productive factors and other confounding factors  Costs associated with changing sectors  Control for total months of working in current job & ratio of households working in particular sectors within the village  Estimate occupational transition probabilities using multinomial logit models, given initial occupation, in stage 1 Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Determinants of occupational shifts  An individual compared her expected utility under different occupations and her constrained conditions  Δ V refers to changes in community variables, such as infrastructure and agricultural circumstances.  Base category is staying in one’s initial occupation, m  The small number of observations of non-farm employers precludes estimation from that base position. Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Main results from multinomial logit Lower initial earnings are strongly associated with the occupational shifts. People switch when underperforming. Greater initial asset holdings are associated with moving from farm to non-farm business owner, while fewer assets are associated with moving back to farm. However, agricultural land holding promotes transitions into farming. Having insufficient water for farming increases shifts from farm to non-farm employment. Transport infrastructure matters. Reduced travel time to the nearest district induces a shift from non-farm worker to farming. Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Selection bias correction - multinomial logit  Determination of wages causes a high correlation between the non- observable characteristics affecting wages and those that simultaneously determine the sector in which the individuals are currently working.  After self-selection correction following Dubin and McFadden (1984) and Bourguignon et al. (2007), we have  Here, calculate rather than just estimating coefficients. Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Estimations of log earnings change between 2005 and 2007, 2007 and 2010 Dubin-Mcfadden (1984) + Bourguignon et al. (2007) correction model: Compared to initial occupation Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Conclusions  Significant occupational transitions in rural Thailand, mainly involving moving to non-farm employment, rather than starting businesses that employ others.  Transitions into the RNFE are associated with statistically significant earnings gains while transitions into farming are causally associated with earnings losses.  The cumulative distribution of income shows that non-farm employers’earnings distribution stochastically dominates the other categories, signaling an occupational ladder: the best employment is as a RNFE business owner and employer; the worst is as an agricultural worker or farmer.  However, only a small number of individuals become non-farm employers, reflecting the difficulty involved in starting, expanding or even keeping a rural non-farm business. Introduction & MotivationData & DefinitionsMethods & ResultsConclusion

Thank you for your interest and, especially, your comments Photo credit: Dave Sperling,