ABOUT 150 jobs at Dounreay are expected to be lost over the next year.
Site licence company DSRL has announced it is seeking volunteers to take redundancy packages.
Staff were told on Wednesday morning of the opportunity to take early leaving terms from the site which has been in decommissioning mode since the last of its reactors was taken off line in 1994.
A DSRL spokesperson said: "An inevitable consequence of making progress is that jobs will gradually reduce.
"With a number of projects due to be completed and a different mix of skills required for the next phase of work, some staff are being given the opportunity to volunteer for redundancy.
"Around 10-15 per cent of staff are expected to be allowed to leave under voluntary arrangements during the next year or so."
The spokesperson said the job losses will not impact on the safety or security of the site.