Set up cloud time sheets.

I have 100 employees who currently use Google Docs to document their hours worked. This is done in a simple Google Doc Spreadsheet with about 4 columns... including: Date of appointment, total time there, customer name, notes on appt. They currently are doing them on their phones, tablets or computers right on the Google sheet... not forms or anything.

I needs a system to put all 100 employee's entries onto 1 spreadsheet. It doesn't have to necessarily be real time (although that would be very nice), but it does at least have to be daily. I need them on one table where I can use Microsoft Access to run relevant queries with the data.

Is there a way I can have my employee's enter fill out time sheets and have every entry appear on one large table? My guess is Google Docs will not have this capacity. I obviously only want every employee seeing only there entries. It would be very overwhelming to simply have them all enter onto one sheet.

Any direction you can provide would be greatly appreciated. Thanks!