Tyrolean will NOT repay the bond if the employment is terminated after the first year due to ineptitude of the pilot or if you're terminated without notice at any time for something like DWI, booze too short before check-in, etc. Does not happen very often, though.
If you're laid off for economic reasons (surplus of pilots) the company will continue to repay the bond unless you "use" the typerating by flying with the same equipment with another company.
Details to be found in the
CLA which doesn't regulate the basic bond however, as this is in a separate contract before employment.
I do think that the repayment of the bond is fair. If you're forced to resign for medical reasons the bond will be covered by LoL which is partly paid for by the company (300€/yr).