Hypothetically, we could say that if the government anticipated a large surplus in the employment insurance fund, it could choose to increase the benefits and to inform the board, which,in turn, should take it into account when setting the premium rates.
For instance, if the government anticipated an enormous surplus, the government could decided, in September or in October, to improve the benefits. This is purely hypothetical. The board would be informed of it and it would set its premium rate in accordance with that. Given the large size of the surplus, it would probably not deem it necessary to raise the premium rate. It will probably prefer to spend some of the anticipated surplus.