I realize this is a year old post but am donating a timesheet I created in case it may be helpful to others. Disclaimer: I am an absolute newcomer to Livescycle designer, but this form is a place to start for others to add features.
The form uses JavaScript and accepts input from the user for the start date of the 2 week pay period, and then it calculates all the dates for the days of the week. It totals the hours entered and can be printed or emailed.
The target email address has been left intentionally blank, and will need to be entered manually.
Hope some find it useful...
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http://www.davidbartholomew.com/PDF_TimeSheet.pdf---and that Karma returns other kindnesses to me.
-David