In-store purchases dipped on Black Friday as online spending spiked, possibly paving the way for an unproductive Cyber Monday as workers nab online deals during office hours.

Black Friday shoppers spent, on average, 3.5 percent less than they did a year ago, according to Reuters, citing a National Retail Federation survey of 4,330 consumers conducted by research firm Prosper Insights & Analytics. Consumers spent $289.19 during the four-day weekend through Sunday compared to $299.60 over the same period a year earlier.

Read more at the Denver Business Journal