As Mercy Medical Center’s Family Life Center announced it is planning to temporarily stop maternity and newborn services in December, the Massachusetts Nurses Association (MNA) is blaming the hospital’s parent company for “inaction,” “erosion of care” and for a decision that could have “lasting impacts.”

Trinity Health, the organization overseeing the Springfield-based Family Life Center, said the services are stopping Dec. 8 due to significant provider and staffing constraints, including nurses, who have “persisted over several months despite concerted efforts to recruit and retain FLC clinical colleagues.”

This summer, Mercy Medical Center registered nurses, represented by the Massachusetts Nurses Association, ratified a new contract they said would aid retention and staffing.