Average consumption spending by households of salaried workers fell an inflation-adjusted 2.6 percent in June from a year earlier for the second straight month of decline, according to a preliminary report released Friday by the Management and Coordination Agency.

The spending also dropped 3.4 percent against May after seasonal adjustments.

The consumption drop reflects a 3.6 percent fall in the income of wage-earning households, which was the first drop in three months and largely stemmed from lower summer bonuses, an agency official said.