Your income will be assessed as means for your husband's JSA as follows.
Disregard €20 for each day you work up to a max of 3 days (€60)
Calculate 60% of the balance - this is the means assessed.
Subtract the means assessed from the full JSA rate for your family size and that is the new entitlement.
Your income is calculated as gross pay less PRSI, union dues, superannuation/PRSA/AVCs.