Hi sales224,
Welcome to the Community. QuickBooks is a versatile program that helps you streamline your work using the powerful features offered in the program. Rest assured, I'll be happy to share more info so you're on the right track.
The ability to add a US employee on the Canadian version of QuickBooks isn't available. I can see the benefit of having this function and I encourage you to send feedback about this to our engineers. You can send feedback by clicking on the Gear icon and looking for Feedback. New product ideas and improvements are based on the feedback we get from users like you. For now, I recommend setting up a US QBO in order to add the employee in question. For more info about our payroll module, check out this link here.
Let me know if you have other questions by leaving a comment below. I'll be one message away.
