NHS Grampian has reported an overspend of more than £1 million in the first five months of 2018.
A report to members of the board on its financial performance show an overspend of £1.39m between January and May.
This compares to an overspend of £1.96m in the same period in 2017-18.
The overspend was mainly due to “continued financial pressures” around medical staffing, according to the report.
This includes the rotation of junior doctors in August which led to posts being filled by trainees and medical locum costs.
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It was revealed earlier this year that the health board needs to make more than £70m of cuts over the next four years to balance the books.
In order to maintain “financial balance”, £18.3m will need to be saved this financial year and a “similar level” of savings would be required for the next three years.