Change to and import stack from react-native-router-flux and do it for root, auth as well.
When you go to the first element of a stack, you call it with its key. That means if you want to go to employeeList you have to call Actions.main().
Thats why people usually name their parent stack with the name of the screen and first with "_" prefix. You could name your stack with employeeList and first scene with _employeeList. Try this and let me know the outcome please
<Router navigationBarStyle={{ backgroundColor: '#2980b9'}} titleStyle={{ color:'#fff', alignSelf:'center' }} >
<Stack key="root" hideNavBar={true}>
<Stack key='auth'>
<Scene key='login' component={LoginForm} title = 'Please login' />
</Stack>
<Stack key='employeeList'>
<Scene
key='_employeeList'
component={EmployeeList}
title ='Employee'
rightTitle="Add"
onRight={()=> Actions.createEmployee()}
initial
rightButtonTextStyle ={{ color:'white',alignSelf:'center',marginRight:5 }}
/>
<Scene
key='createEmployee'
component={EmployeeCreate}
title='Create Employee'
/>
</Stack>
</Stack>
</Router>