This article explores the determinants of interregional migration in Indonesia. Employing basic and modified (extended) gravity models, and using data from the 2000 and 2010 Population Censuses and the 2005 Intercensal Population Survey, we test Long's (1985) hypothesis that in the early stages of population redistribution, economic development is positively related to a concentration of the population. Using per-capita GDP as a proxy for income and as an indicator of economic development, we find that migration in Indonesia is indeed directed towards more developed regions. This finding supports the notion that regional disparities in development are an important factor in interregional migration in Indonesia. In line with classical gravity models, our findings show that distance is negatively related to the size of migration flows. However, unlike previous studies of interprovincial migration in Indonesia, we find that the effect of distance has weakened over time.

We study the extent to which the likelihood of specific types of migration in Indonesia varies by the situation in the labour market and family life course. We distinguish migration types according to origin and destination (Jakarta, other metropolitan areas, and non-metropolitan areas). For migration from Jakarta, we also distinguish migration to other metropolitan areas within commuting distance. As expected, we find that young adults are the most mobile category. As an exception, migration from Jakarta to nearby metro areas was just as likely for ages 30-54 as for ages 23-29. Our findings suggest that migration to Jakarta and other metropolitan areas, in particular, is most likely undertaken for better education or jobs. Married people are more likely than others to leave Jakarta for nearby metropolitan areas.

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This study aims to explain the effect of socio-demographic variables i.e. sex, wage, employment status, and marital status on commuting in Jabodetabek. The result of binary logistic regression using Sakernas 2012 shows that male are more likely to commute than female. Male in formal sector have the highest probability to commute while by marital status, unmarried male have the highest probability to commute. The level of wage is positively related with the probability to commute although at certain level of wage, an increase in wage increases probability to commute among male lower than probability to commute among female.AbstrakStudi ini bertujuan untuk melihat pengaruh variabel sosio-demografis yaitu jenis kelamin, upah, status kerja, dan status kawin terhadap peluang mobilitas ulang-alik di Jabodetabek. Hasil regresi logit biner menggunakan data Sakernas 2012 menunjukkan bahwa laki-laki lebih cenderung untuk ulang-alik dibandingkan dengan perempuan. Peluang ulang-alik paling tinggi menurut status kerja adalah pada pekerja laki-laki di sektor formal dan menurut status kawin adalah pada pekerja laki-laki belum kawin. Ditemukan hubungan positif antara kenaikan tingkat upah dengan ulang-alik walaupun pada tingkat tertentu, kenaikan peluang ulang-alik untuk laki-laki akibat kenaikan tingkat upah lebih kecil dibandingkan kenaikan peluang ulang-alik untuk perempuan.

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