J.H.
I don't want to give false information. However, unless the laws have changed since I went through IVF last (4+ years ago), the laws at that time were as follows:
If your employer (employed within the state of IL) is covered under a FULL-insured policy (outside carrier), then the STATE law says that you can get IVF up to 4 times for a first birth (subject to your deductible, copays, etc.). Then the law said that you can have IVF up to 2 additional times after a live birth.
Now, if your employer is SELF-INSURED, they aren't subject to the state laws. In other words, they can write their own rules. Now, just because insurance is through a third party provider, doesn't mean they can't be self-insured. Most self insured plans contract with a large insurance company to act as their administrator, etc.
One question you might want to ask is if they are self-insured or covered by a full-insured policy through a third party.
IL used to be one of like 4 states whereby infertility coverage was standard. Don't know if that is still true though. Research it on-line.