I found the following on welfare.ie which states that it is the deciding officer who makes the final decision on whether someone is a systematic short time worker, a casual worker or a part time worker.
My wife filled out the form that she was given, her occupation would clearly indicate that she works Mon-Fri 9-5pm type job so strange that she was assessed as a casual worker.
Section from website:
(b) Part-time Workers and Substantial Loss ConditionThere are 3 categories of claimant who may qualify for JB while partially employed. They are:
Systematic Short-time workers (SST)
Casual workers, and
Part-time workers.
To qualify for JB, a person must be unemployed for at least 3 days in 6 (see "Period of Interruption of Employment") and, except in the case of casual workers, must suffer a substantial loss of employment.
Deciding Officers should approach the matter as follows:
Is the person a systematic short-time worker? (if s/he is, the condition regarding substantial loss has automatically been satisfied).
If not, is s/he a casual worker? (if s/he is, the condition does not apply)
If neither, the person must be a part-time worker to whom the substantial loss rule applies.