I just got a $100.13 credit on my pay check from Obamacare I didn't know about! (ERRP)

I have no idea this was coming. Is anybody up to speed on this for a quick explanation? The City of Omaha is self insured for healthcare. Since I pay for a portion of my insurance, I assume the reduced cost to the city is shared among those in the program.

http://www.gpo.gov/fdsys/pkg/FR-2012-03-21/pdf/2012-6728.pdf

The Patient Protection and Affordable
Care Act (Pub. L. 111–148, enacted on
March 23, 2010) (the Affordable Care
Act), included a provision that
established the temporary Early Retiree
Reinsurance Program (ERRP) which
provides reimbursement to eligible
sponsors of employment-based plans for
a portion of the costs of providing
health coverage to early retirees (and
eligible spouses, surviving spouses, and
dependents of such retirees), during the
period beginning on the date on which
the program is established, and ending
on January 1, 2014.


Consistent with section 1102(c)(4) of
the Affordable Care Act, the rule at 45
CFR 149.200 states:
A sponsor must use the proceeds under
this program to—(1) reduce the sponsor’s
health benefit premiums or health benefit
costs, (2) reduce health benefit premium
contributions, copayments, deductibles,
coinsurance, or other out-of-pocket costs, or
any combination of these costs, for plan
participants, or (3) reduce any combination
of the costs in (a)(1) and (a)(2) of this section.
Proceeds under this program must not be
used as general revenue for the sponsor.