A Bayside-based rehabilitation center that provides long-term care to children with serious illnesses and injuries will lay off 32 employees in its New Hyde Park location by May 5 -- about 10 percent of the workers there -- the nonprofit said in a regulatory notice posted earlier this week.

St. Mary's Healthcare System for Children filed the notice with the state Labor Department after announcing earlier this month that it was closing its early-intervention program. The 32 employees work in the program in that office. Forty-two workers in Staten Island and 34 in Bayside will also be laid off.

The program, which is more than 20 years old, has served newborns to 3-year-olds who have developmental delays or are suspected of having them. The hospital cited low reimbursement rates, which it said the state Department of Health has not raised in 12 years.

"The reimbursement rate didn't cover the cost of the care, and it was only so long that the organization could support that," spokeswoman Leslie Johnson said Wednesday.

The newborns and toddlers receive services such as physical, occupational and speech therapy, and special education at home or in places like day care centers, Johnson said.

The nonprofit has 1,200 employees and says it is the largest provider of long-term health care for children in New York State.

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The early-intervention program served nearly 3,000 children on Long Island and in New York City and Westchester last year, many in low-income neighborhoods, the hospital said.

Johnson said the nonprofit would work with the state to help families transition to other service providers.

New York companies with at least 50 full-time employees must give the state and workers a 90-day heads-up on a mass layoff or closing to comply with the Worker Adjustment and Retraining Notification Act, or WARN.