While there may be exceptions, the measurements noted are generally defined as--Constantly: 5.5+ hours per 8-hour day; Frequently: 2.5 - 5.5 hours per 8-hour day; Occasionally: 0 - 2.5 hours per 8-hour day. If an item is too heavy to lift, push or pull, and / or carry, the Partner must break the box down into lighter, smaller, more manageable components, or ask for assistance from another Partner or a manager.