As an exception, do not reopen if:
Reopening is precluded by the rules of administrative finality in GN 04010.001 ff.;
The return to work activity follows a layoff due to seasonal shutdown, reduction in
force, stoppage or decrease in operations due to economic factors, or full employment
for a different employer during the course of a strike.
In determining whether payment continued after the beneficiary stopped working, prorate
a lump-sum payment, e.g., unused annual or sick leave, that was made at that time,
over the weeks thereafter in which it normally might have been paid, had the beneficiary
continued to work.