You must be thinking that OS X file recovery is a hard job to accomplish. Mac OS X offers lots of features but as far as data security is concerned it does not provide enough to guarantee that the data will not be lost from the system. The data loss can be due to some unexpected situations or from some error of the user. The user might have deleted the file by emptying trash or he might have formatted the drive to fix some error. The unexpected situations can be virus infection, hard disk error, abrupt shut down or some thing else. Mac OS X file recovery is what you need now if you have lost any important file. You are always expected to keep back up of the important files so any loss can be recovered easily. There is also an inbuilt back up utility for Mac OS X file recovery which is Time machine. It creates back up automatically at regular interval and restore the file when required. But sometimes the Time machine backup fails and you have to use a recovery tool. Mac data recovery software is the best you will find for OS X file recovery.
Macintosh OS X file recovery is one aspect which continue to haunt users irrespective of the version they might use. file recovery becomes necessary if its an important one and when there is no backup with the Time Machine. Although, Trash is one place to look for the files as it might get stored until it has been emptied. But there is no certainty that each and every deleted files can be obtained from it. Suppose the file has been deleted using shift+del command. Now there can be other reasons out there due to which Macintosh OS X file recovery becomes inevitable. It is not only human error such as accidentally deleting of the files that is responsible for the loss of files on Mac OS X. there can be issues related to corrupt file system, partition error, when Mac system fails to boot unexpectedly. You can't do much about it as it is beyond your control. However, definitely you can try third party Mac Data Recovery software which is perfect utility for Macintosh OS X file recovery.