The establishment of  an oil palm company provides a change in the family welfare of daily workers in its plantation. The purpose of this study were to determine the income and welfare of oil palm family of daily worker of oil palm plantation. This research was conducted from August to September 2019 in PT Prima Mitrajaya Mandiri (PT PMM), Kota Bangun Subdistrict. The number of respondents was 52 workers. Data were analyzed by descriptive method. The results of this reserach showed the average income of daily worker in section of fertilization as much as IDR22,179,196.00 year^-1, weed control as much as IDR23,907,101.00 year^-1, and harvesting as much as IDR38,477,611.00 year^-1.  The average of family income of daily worker from working in oil palm company and from non oil palm (farm, off-farm, and no-farm) in section of fertilization, weed control, and harvesting were IDR33,625,350.00 year^-1; IDR30,678,529.00 year^-1;  and IDR40,061,611.00 year^-1, respectively.  Based on the average per capita income per year, the daily worker family of oil palm plantation of PT PMM was categorized welfare. 

Badan Pusat Statistik Provinsi Kalimantan Timur. 2013. http://kaltim.bps.go.id/. Diakses tanggal 16 Oktober 2019.

Badan Pusat Statistik Kabupaten Kutai Kartanegara.2018. http://kukarkab. bps. go.id/. Diakses tanggal 20 Mei 2019.

Dinas Perkebunan Provinsi Kalimantan Timur. 2018. http://disbun.kaltimprov. go.id/komoditi-8-kelapa-sawit.html. Diakses tanggal 20 Mei 2019.

Firman, dkk. 2018. Analisis tingkat pendapatan dan kesejahteraan petani kelapa sawit di Desa Merarai Satu

Kecamatan Sungai Tebelian Kabupaten Sintang. Jurnal Universitas Tanjungpura. 8(2): 61-66.

Sukirno. 2005. Pengantar Teori Mikro Ekonomi. Raja Grafindo Persada. Jakarta.

Yulianto. 2015. Indikator Kesejahteraan Menurut Bank Dunia. https://e-journal.uajy.ac.id. Diakses 16 Oktober 2019.