my company do not have a HR deparment and they ask me to find out myself. Lucky my manager help me to call and ask. Your company have to come out the 3 and 4 month pay first, later they will claims from government. But i think you need to fill up one form. Below is a link regarding claim for reimburesment of Government-Paid Maternity Leave.
Family & Community Development @ eCitizen - Government-Paid Maternity Leave