The same way you would process a permanent termination.  You just select the correct code for the reason for the ROE, lay off due to lack of work or such.  
For my employees that are on a temporary leave like this I leave them as active employees.  When the return I delete the date of termination and the ROE code from their profile.  I make a note of the date they returned in the memo section so that if I have to process another ROE for that employee I have that information handy.

Oh, IOW, can you print an ROE even though you leave them as active?

Oh, IOW, can you print an ROE even though you leave them as active?

The only thing you need to do is to put in a termination date and a ROE code.  Then you can use the export ROE feature in Sage to complete the ROEs

Thanks