If you are on benefits and take a seasonal job, how do you cover your outgoings between when you start (and come off benefits, whilst applying for in work benefits) and when you get paid ?
Becuase even back in the 80s (when the system was a lot less complex) there was that bloody time lag that meant actually finding a job, a permenent job, meant a month of cold and hunger as transports costs took priority. Even with the small extra "tide you over slightly" payment they were prepared to pay if you know about it.
The pain of getting over that hump was worth it for a salaried position (albeit low paid) that was intend to be full time and ongoing.
But would it be worth it if you earned very little more than benefits, gained no transferable skills, could add only unskilled seasonable work to your CV AND had the insecurity of an income gap PLUS the nightmare of getting your benefits sorted out again afterwards ?
That wouldn't just be "not worth it". It would be almost masochistic .
What might work is a rather elegant new voucher thingie we have over here. Even if you are on out of work benefits (which are contribution based and time limited, do not go up if your outgoing's go up- so admittedly quite a different system) you can work and earn an additional 4000 euros per year using the voucher system to minimise bureaurocracy.
So employer buys a 10 euro voucher (plus small extra cost for admin fees) and pays a casual worker with that. The worker takes the voucher to the post office or tabacconist's and cashes it for 7:50 The difference is tax which goes to the tax office. (you can also get 20/50 Euro vouchers)
In order to minimise the risk of employers exploiting the system and rendering potential full time/non seasonal work positions into casual work only, while an unemployed worker can earn up 4 grand pa, they can't be paid more than 2 grand ish from a single employer. So if employer wants a full time workforce, he has to give them a contract. Although most new contracts tend to be the new temporary work ones. But still, you get your contributions paid in full.
I hope I explained that OK. It really is simpler than perhaps I've made it sound.
Anyway. With something like the voucher system in place, perhaps people who are out of work wouldn't be so reticent to take on seasonal jobs. Becuase not only would it not cause them economic issues for very little gain, it would provide very concrete extra income.