Terrible option.  The Admin is not always the person doing the payroll.  If a user has access to all payroll features including sending direct deposit they should be able to invite an employee to view the paycheck they just prepared for them!  We host QB and most of the Admin's are the business owners that pay us to to process payroll.  They are not going to log in every week and send invites to new hires.  The Workforce option is just awful.