the present production is 100T. your present salary is 100s we are going to downgrade your basic salary to 80S but provided you continue to produce 100T your salary will remain 100S.
However if you produce more than 100T (say 120T) your salary will be 120S conversly, if you produce only 90T your salary will be only 90S.
The override is that if you produce 80T or less for an extended period (say 3 Months) you will be suspended without pay indefinitely.