Depending on whether your OS uses a , or a . for decimal numbers changes how excel will parse a CSV file. Americans use a . for decimal numbers, so it will parse it as a CSV. Other countries use a , for decimal numbers, so it will parse it as a SSV (semi-colon separated) and everything will be in a single column.
To make matters worse, randomly, employees will have their OS using US or GB locales so that if you distribute a CSV, it will work for some employees, but not for others.
