Answer:
1. It is likely to reduce unemployment by increasing the incentives to look for work earlier.
2. It would be costly.
Explanation:
A worker who had received the benefits of unemployment has now added incentive for looking in to work earlier. But the cost will increase since the incentive provided for the entire period of the 52 weeks which is not limited to the period of how long the person took to get employment again.
So it is most likely to decrease the unemployment by an increase in the incentive to look for work again. And it this would also increased the cost.