To provide a business management assist system that makes it possible to readily grasp a relationship between labor cost data and production sales data.SOLUTION: A business management assist system comprises: a storage unit in which labor cost data on a labor cost for each employee, and production sales data on a production sales management are stored; and a tally unit that tallies the labor cost data and the production sales data according to conditions of an input segment element and a tabulation period. The labor cost data is data that has a subject code associated with a detail item and includes: first labor cost data in a first period serving a reference on a time axis of a labor cost; and second labor cost, which is calculated based on the first labor cost data, in a second period different from the first period. The tally unit is configured to output the production sales data, and labor cost tally data based on at least one labor cost data of the first labor cost data and the second labor cost according to the condition of the segment element and the tabulation period.SELECTED DRAWING: Figure 5
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