Is there a way the employees can review and approve their time before we run payroll?

Hello there, @mcneim.

In QuickBooks Online, reviewing and approving the time of your employees' timesheets before running payroll applies to you. Still, your employees can add their timesheets. 

I would recommend checking these resources for more information about reviewing and approving time within your QBO account.

• Approve or unapprove QuickBooks Time hours from QuickBooks Online.
• Set up timesheet submission and approvals in QuickBooks Time. 

You can add them as time tracking users in your QBO account. Here's how:

1. Go to the Gear icon.
2. Select Manage Users.
3. Select New.
4. Click Time Tracking Only user. Then, Next.
5. Enter the user's email address. They will get an invite that they'll need to accept. (The Time Tracking Only user will be prompted to create an Intuit account if they don't have one.)
6. Once the user has accepted the invite, they can log in to QuickBooks Online to perform time tracking.
   

To learn more about Timesheet setup, you can check this article: Learn how to set up timesheets in QuickBooks Online. 

Keep me posted if you have any other concerns about your employee's time in QuickBooks Online. I’ll get back to answer them for you. Have a good one.