The group has temporarily closed the rest of its settings to concentrate on the four hubs, which are located close to hospitals and primary care facilities in Middlesborough, Stockton, Northallerton and East Cleveland.
They will be open 24 hours a day including weekends to cater for shift patterns of doctors, nurses, paramedics, police and fire officers, care workers and others classified as keyworkers, offering funded and non-funded places for children from 0-11 years old.
Rosedene has bought equipment including beds to be able to care for children staying overnight.
Alice McCullagh, director of Rosedene Nurseries, said, 'We have created one key worker childcare hub in each of the local authority areas in which we operate, which can be accessed by eligible parents, regardless of where they live and if they are an existing customer or not.
'To enable key workers to go to work and save lives, these four childcare centres will be open twenty fours hours a day, including weekends. We know that many designated key workers are working long hours and different shifts, we will be totally flexible as we understand that during the pandemic people can’t always choose the hours that they will be needed to work.
'If we can provide children with a "normal" and happy environment during these challenging times whilst relieving the worry of childcare from designated key workers, we will be happy that we are fulfilling our role.'
Rosedene is a family-owned group, which opened its first setting in the 1950s. It now offers more than 500 places across its 12 settings.