You are eligible for FLMA, which is the Family Leave Medical Act... which I'm sure you know about, since you have been with your job for over 1 year.
Now typically, a woman works up until 2-weeks prior to her 'due date' and then the Doctor will sign you off, to take maternity. This is standard, unless you have a high risk pregnancy or what not.
Now, 6-weeks Maternity Pay is typical. I had that too. But for me... I DID intend to come back to my job... so, therefore, I DID get the 6-weeks paid Maternity Leave.... and then after that I took additional weeks off, with approval from my Boss (but those extra days were non-paid).
Now, keep in mind that my 6-weeks PAID Maternity Leave started clocking away from the POINT I left work, for Maternity Leave. But after I had my baby, I had decided that I would not return to my job and would be a SAHM. So at that point, I informed my Boss. But it was after that 6-week period.
But, under FLMA, you are supposed to have the 'safety' of your job for 3 months, without being fired/let go. BUT this does NOT mean you are "paid" for this time....it is just time-off, with job security.
You can research the FLMA online.
The conundrum here, is that you ALREADY told your Boss you would not be returning, after you have the baby. So, after you have your baby, you will NO LONGER be an "employee" of your Company...so technically, you are not an employee who can receive Maternity "pay" or Maternity "leave." Since, you are NOT taking a Maternity "leave"... you are just leaving. Period. To me, you CANNOT be "on payroll" if you are no longer an employee, thus, negating the 6-weeks Maternity Leave Pay. You have already given 'notice' that you are leaving the company, when you have the baby.
Just ask your HR dept, if you can take your Maternity Leave benefits, in terms of payment, instead. Like how some employees can take their vacation time benefits still, even if they did not go on vacation, and it's accrued. SOME companies will do that. But it is not mandatory. Not all employees are pregnant or can get pregnant. It's not a benefit for "all."
BUT to me, the problem is that, you are not "owed" the 6-weeks Maternity Leave payment.... because you will NO LONGER be on their payroll. Your employment terminates as soon as you have the baby, or until your Doctor orders you to stop working.
It does not matter if it is a non-profit or for-profit company... but sometimes, a Boss might be more liberal than others on deciding if you are compensated for something.
NOW, I would ALSO check about Medical Insurance coverage, AFTER you leave your job. You will need coverage, since you are having a baby....
All the best,
Susan