We aim to measure the impact of the macroeconomic conditions in the destination countries on the outcomes relating to household living standards through remittances. There is a concern about the endogeneity issue since household welfare outcomes are likely to be affected by remittances and vice versa. It is well known that addressing endogeneity is one of the most crucial elements of estimation relating to remittances and the effects (McKenzie et al. (2010)). This is an important issue for our estimation by pooling observations rather than using panel fixed effects to remove latent characteristics of the sample households. In the context of the Philippines, remittances are often motivated to finance non-food consumption in the Philippines, which makes the OLS estimate on non-food consumption biased (less problematic for food consumption). This may be the case for flow of assets too. Moreover, remittances are substitute for domestic income but a third factor like endowment may make the estimate obscure since high endowment migrants holds higher ability to earn domestically.
Thus, we employ a two-stage least squares (2SLS) estimation using an index of the macroeconomic performance of the destination countries as an instrumental variable.Footnote 8 We construct the “economic performance (ECON)” variable by taking the weighted average per capita GDP of the country of residence of each household member, including overseas migrants. More specifically, the “ECON” variable is constructed as:
$$ {ECON}_{it}=\ln \frac{\sum_{k\in \mathcal{K}(i)}{g}_{kt}\times {n}_{kit}}{\sum_{k\in \mathcal{K}(i)}{n}_{kit}} $$
Here, \( \mathcal{K}(i) \) refers to the set of countries where the members of household i live, gkt is the log GDP per capita in country k in t (2016 or 2017), and nkit is the number of household i’s adult member who live in country k.Footnote 9
We assume that GDP per capita is exogenous to the amount of remittances in each household. Our assumption means that ECON picks up supply-side shocks on migrants’ remittances, which reflects labor market conditions that they are exposed to in the destination countries. We acknowledge the possibility that our instrumental variable can also be correlated with demand-side shocks that would cause biases of the coefficients. Specifically, it might be the case that household’s latent characteristics and the choice of destination are closely associated; high endowment migrants are also likely to choose a high-income destination country, which could result in overestimation of the coefficient on the remittances. We also notice that it might be hard to establish exclusion restriction here since changes in economic performance outside the Philippines will have direct effect on household welfare in the country not through remittances but trade and financial channels affecting wage and employment prospects.
In the estimation, we use a level specification by pooling the observations at the first and second rounds, rather than a fixed effect model to remove unobserved heterogeneity. The main reason is to utilize a larger variation in the amount of remittances, the main variable, to obtain stable estimation results. Since the survey interval is short (less than one year), we see little change in the amount of remittances during the survey period. Instead of utilizing a variation between two periods in the same households, we pooled the data at both baseline and endline. The advantage is we can obtain a larger variation between households while the disadvantage is to not able to use a fixed effect model but the cost is abbreviated to some extent if we use a valid instrument.Footnote 10
In the first stage, we regress the amount of remittances on the logarithm of the “ECON” variable and other covariates.
$$ {REMITTANCE}_{it}={\beta}_0+\beta \left({ECON}_{it}\right)+\boldsymbol{\gamma} {\mathbbm{X}}_{it}+ baranga{y}_i+{\lambda}_t+{\epsilon}_{it} $$
(1)
where i indexes households, and t refers to the survey round with 0 indicating 2016 and 1 indicating 2017. REMITTANCEit is calculated as the monthly average either over the past 12 months for the first-round or for the period since the first-round visit in the case of the second round.Footnote 11\( \mathbbm{X} \) is a vector of household characteristics that were reported in Table 1. We also include barangay fixed effect (barangayi) and survey round fixed effect (λt). Lastly, ϵit is a well-behaved error term. This specification exploits cross-country variations of GDP per capita to explain variations in the amount of remittance across households, rather than exploiting within-household variations of remittances between the two survey rounds.
Column (1) of Table 2 shows the results of the first stage regression. We performed a weak IV test and confirmed that F-test statistic for weak IV is 137.48 with p value of 0.00. The coefficient on “ECON” is positive and significant and indicates that a 1% increase in “ECON” leads to a 1.67% increase in income from remittances per capita; this implies that a significant economic recession in the destination countries will lead to a substantial drop in remittances.
Table 1 Summary statistics Next, we use the estimated dependent variable of remittances at the second stage regression.
$$ {Y}_{it}={\beta}_0+\beta \left({\overline{REMITTANCE}}_{it}\right)+\boldsymbol{\gamma} {\mathbbm{X}}_{it}+ baranga{y}_i+{\lambda}_t+{\epsilon}_{it} $$
(2)
The dependent variables Yit are a logarithm of (1) average monthly household expenditure per capita, (2) average monthly household food expenditure per capita, (3) average monthly household non-food expenditure, (4) average monthly new savings deposits per capita, (5) average monthly loan repayments per capita, (6) agricultural income, (7) non-agricultural income and (8) average monthly household incomes from domestic sources.Footnote 12 The main explanatory variable \( {\overline{REMITTANCE}}_{it} \) is the log average monthly overseas remittance income per capita, which is projected by the first stage estimates.
Columns (2)–(9) of Table 2 convey the second stage results. We will focus on the coefficient on the logarithm of remittance income per capita, the main explanatory variable. The coefficient on the remittance income is positive and significant for household spending per capita and the size is 0.084 (Column (2)), showing that a 1% increase in remittance income is associated with a 0.08% increase in per capita household spending. When we split household expenditure into food and non-food spending, the coefficient is significant and larger for the former (Columns (3) and (4)), showing that a 1% increase in remittance income is associated with a 0.14% increase in per capita food spending. The coefficient is positive for new savings and negative for loan repayments, but it is not significant (Columns (5) and (6)). While the coefficient on agricultural income is not significant, it is negative and significant for non-agricultural income (Columns (7) and (8)). Income from domestic sources is negatively and significantly associated with income from remittances (Column (9)). Both coefficients on non-agricultural income and domestic source income are minus 0.22 and 0.23, showing that one fifth of a change in remittance income is abbreviated by those income under the market situation in 2016 and 2017.
Table 3 reports the estimation result by splitting the sample by type of head of household. We run the regression by subgroups to address heterogenous effect of remittances on welfare of households by sex, age, and educational attainment of the head of household. First, we see that the coefficients on total, food and non-food spending are positive and significant for male headed households while the coefficient is positive and significant, and the size is larger on food expenditure for female headed households. A larger remittance income is negatively and significantly associated with non-agricultural income and domestic sourced income for male-headed households and with agricultural income for female-headed households. Second, if we divided the sample by whether the head of household’s age is greater than 52 years old, the median of the head’s age in our sample, the coefficient on spending is only significant for food expenditure by households whose head is older and remittance income is negatively associated with agricultural income and domestic income for those households. Third, when we divide the sample by the head of household’s educational attainment, the coefficients on household spending are positive and significant for households whose head completed less than secondary school.
Table 2 Estimation results In summary, the estimation results confirm that a decline in remittances discourages household spending per capita and is partly abbreviated by non-agricultural income and domestic income.