if you are approved for receiving supplementary benefits ("supplerende dagpenge") in your A-kasse, then you will get paid the supplementary benefits for the weeks you have been working less than 37 hours.
The supplementary benefits is calculated on a weekly basis, but is paid monthly.
As mentioned in the start - the A-kasse can only pay supplementary benefits ("supplerende dagpenge") to you for the weeks where you have work, if you have been approved by the A-kasse to get supplementary benefits.
If you have work in a week, but are not approved for Supplementary benefits, then you have no right to get benefits ("dagpenge") for that week.
Maximum 30 weeks with supplementary benefits within a 2-year period
Only weeks where you have both had work and paid unemployment benefits, counts.
If you work less than 37 hours in a week, and you at the same time get dagpenge for the month where the week is in, then the week will be counted in the usage of your 30 weeks with supplementary benefits.
It is voluntary if you want to use of the 30 weeks with Supplementary benefits. If you work in one week, but dont want to receive Supplementary benefits for that week, then you can tell on your monthly benefits card "Dagpengekort"), that you don's want to receive Supplementary benefits for that week. Then there will be withdrawed 37 hours in dagpenge for that week. But then you have not used of the maximum 30 weeks with supplementary benefits.
You will get paid up to 160,33 hours
There can be supplemented up to an max. of 160,33 hours per month. However there is a minimum of how small number of hours you can get paid for. If you have right to supplementary benefits for 14,8 hours or less for a month, then you will nog get paid any money.
This means that you can get supplementary benefits if you work less than 145,53 hours in a month. The number is 145,53, because you will not get paid if you only have right to 14,8 hours or less per month.(160,33-145,53=14,8).
In your case, where you have been working 15 hours in one week, and have no work rest of the month, you will get paid for 145,33 hours (160,33-15). Only for the week you have worked, you will use of the maximum of 30 weeks you have right to receive Supplementary benefits.
Once the 30 weeks are used
After you have spent all 30 weeks, you can no longer receive supplementary unemployment benefits in weeks where you have working hours. You are, of course, still entitled to receive unemployment benefits in weeks where you do not have working hours.
Anders Weber, www.a-kasser.dk