Around 15 staff from Sports and Spinal Physio Port Macquarie have agreed to give blood and boost stocks ahead of the back-to-back Easter and ANZAC Day holidays.

Senior physiotherapist Micheal Robinson said many were donating for the first time.

"Thought it was a great idea to come in as a group, help out as a social event," he said.

"It's good to get involved in all aspects of community and do our part."

At least 50 extra donors are needed between Thursday, April 18 and April 25 to bolster supplies for cancer and road trauma patients this Easter, according to Blood Service spokesperson Stuart Ward.

"The need for blood never takes a break yet we know that donor numbers are traditionally low around holiday period such as Easter," he said.

"Some components of blood have a shelf life of only five days so it's important that blood is donated over, and immediately after, the Easter break.

"Back-to-back public holidays mean more donors are likely to be away on holidays. Three public holidays in quick succession is a challenge for short-lived blood stocks.

"Cancer patients in particular rely upon blood to help them through their chemotherapy treatment, as well as trauma patients who need it to survive major bleeding."

Port Macquarie Blood Donor Centre is open on April 18, April 20, April 23 and April 24.

Residents can donate by calling 13 14 95 or clicking here.

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