My employer agreed to refund my annual membership fee in isc2 which is standard for most companies.
What I found strange is that they require me to provider certification of residency for tax purposes from isc2 (I was told this is something standard for EU taxpayers which pay abroad entities for any kind of expense). I'm currently struggling to get the current certificate from isc2.
Question to you (most probably to EU-based people) - did you face something similiar in your company?
As much as I have experienced in similar situations, it is simplest to pay personally to the service provider (for example to (ISC)2) at first. After that you can present the invoice to your employer who can use it to pay the same amount to you. VAT part can be problematic in same situations but usually it is not worth of extra bureaucracy.