WhosOff

From Them:

Managing staff holiday/Vacation can be a nightmare! Whether you have 4 or 400 staff WhosOff can help. Its easy to use, easy to get started, and its free!

Checking who's already got holiday/vacation booked, who's off today, who's off tomorrow, who's off next week; has someone had more holiday than they should? can somebody have this holiday? Can that person take time off in that week? who's off sick? who's off sick more than most?...See it all at a glance in WhosOff... your free staff holiday planner.

WhosOff.com helps you deal with these problems. You set up your staff holiday entitlement. You can also set who cannot be off with who and WhosOff will check before letting a normal request through.