WhenToWork provides an export function for paid accounts.
You can
Export Employee Details,
weekly schedules and statistical data for a certain date range in a number of
formats including text, csv and spreadsheet).
If you are a trial account and would like to try the export function please
go to:
http://WhenToWork.com/testdrive.htm and click to log in as a Manager.
Then in the top menu click Reports. From the test drive sample account you
can experiment with the various reports you can export.