I am an agricultural economist and postdoctoral researcher with the Food Systems Economics and Policy Group and the Global Health Engineering Group at ETH Zürich. Previously, I held research positions at ETH Zürich, where I completed my PhD, KU Leuven (Belgium), the University of Göttingen (Germany), the National Center for Agricultural Mechanization (Nigeria), and the National Horticultural Research Institute (Nigeria).
My research addresses policy-relevant questions at the crossroads of applied microeconomics, labor economics, agri-food systems, and development in low-income settings. Currently, I work on topics related to creating more and better jobs, circular food systems, and intra-household welfare in resource-constrained settings. In my work, I combine descriptive, experimental, and quasi-experimental methods with large-scale secondary and primary datasets. I particularly enjoy fieldwork and have led large-scale primary data collection efforts and implemented two field experiments involving farmers, farmworkers, restaurants, and waste traders in Nigeria and Malawi.
Outside of work, I enjoy discussing social issues, playing football, and gaming.
Email: aremu.theophilus@gmail.com | oaremu@ethz.ch
Fabry, A., Aremu, O., and Meemken, E. M. (2026). Labor Shortages and Food Loss: Evidence from Tomato Farmers in Nigeria. Environmental Research: Food Systems. DOI
Aremu, O., Illien, P., Olajide, A., and Meemken, E.-M. (2026). Contract Labor, Job Quality, and Turnover Intention: Evidence from Nigeria. Journal of Agricultural Economics. DOI
Meemken, E.-M., Aremu, O., Fabry, A., Heepen, C., Illien, P., Laitha, A., and Kammer, M. (2025). Policy for Decent Work in Agriculture. Agricultural Economics. DOI
Aremu, O., Fabry, A., and Meemken, E.-M. (2024). Farm Size and the Quality and Quantity of Jobs—Insights from Nigeria. Food Policy. DOI
I enjoy fieldwork and have had the incredible opportunity to lead and implement large-scale primary data collection among hard-to-reach actors in Nigeria and Malawi:
Farm, restaurant, and waste trader surveys (with 900 interviewees) for a postdoc project (Malawi, 2026)
Semi-structured interviews with farmers, restaurants, and informal waste collectors (Malawi, 2026)
Semi-structured interviews with labor contractors, contract workers, and farmers (Nigeria, 2025)
Randomized information intervention involving over 500 interviewees (Nigeria, 2024)
Monthly panel phone survey involving over 500 interviewees across 15 panel rounds (Nigeria, 2023 - 2024)
Matched farm-to-worker survey with over 1,600 interviewees (Nigeria, 2023)
Interviews with stakeholders, experts, and farmers in Nigeria's tomato Sector (Nigeria, 2022)
Focus group discussions and interviews with cocoa farming households (Nigeria, 2016)