The 4 Categories to Calculate ROI Order Entry Savings = Hours Saved Monthly x Average Hourly Warehouse Worker Wage Instead of spending an entire day on order and shipping entry, a WMS saves warehouse workers up to 8 hours a day on data entry, though for the sample calculations below we have them saving 7 hours a day for a total of 1 hour a day spent managing order and shipping info. extensiv.com | 833.983.6748 8