Farmers' household in the village involve in many activities both farming and non-farming activities. This involvement affect the time allocation for farming, which in turn will have impacts to the household income. Therefore, there is a need to study the time allocation pattern of farmers, non-farming job opportunities and other factors that affect the working time allocation, income and farmers' household expenditures. The research question are: (1) how the work flow patterns in the allocation of household farmers in rice production area and why rice productivity is low? (2) whether job opportunities in non farm business influence the flow of work in farming and what factors affect the flow of work, household income and farmers expenditure?. The purpose of this study is to analyze the factors that affect the working time allocation, income, and expenditure of farmers in the rice production area. The research was conducted in Sigi, Central Sulawesi Province on December 2015 – Pebruary 2016, using cross sectional data in the household based economic approach applying a model of simultaneous equations. The results showed that non-farm activities have played important roles in the rural economy, especially domestic rice farmer household. They are not only contribute to household income but also in to working time allocation. In terms of the working time allocation, farmesr do more non-farm activities than paddy farming activities. Male household members'working time allocation is the highest activities compared to the female household members in the farm or non farm. Meanwhile, in terms of income, the contribution to farmers' income from non-farm is greater than from farm. Food consumption is the highest expenditure in the farmer household.