Low-quality evidence indicates that providing employees with a standing desk option may reduce the length of time some people sit in the first year. This reduction in sitting may decrease with time. It is not clear how standing desks compare to other work-place interventions to reduce the length of time employees are sitting during the work day. There is no international consensus on recommended levels of sitting and standing while at work, and suggested workplace practices vary in different countries. There are only minor differences in energy expenditure between sitting and standing.