The research, carried by the Diffley Partnership, also reveals that 39 per cent of people in work or on furlough are worried about the security of their job in the next 12 months.
More than half of respondents (55 per cent) knew nothing or not very much about their rights, with a further 29 per cent only knowing a little.
CAS commissioned the polling as part of their Redundancy Rights campaign, which launches today.
With Scotland facing a wave of job losses amid the Covid-19 pandemic, the charity is encouraging people at risk of redundancy to check our online advice here.
The campaign will run for the next two weeks across press, radio and social media - including this video.
Launching the campaign today, CAS Social Justice spokesperson Mhoraig Green said:
“Scotland is facing a tidal wave of job losses as the furlough scheme winds down while restrictions remain in place.
“What is concerning about this data is how many people aren’t confident about their rights during the redundancy process.
“Losing your job can be really challenging experience and it’s easy to feel overwhelmed. Our message to people is that they have rights during the process and the Citizens Advice network is here to help you understand them.
“People facing their last pay-cheque in a job should make sure they have all of their holiday pay and hours worked paid. If they’ve been on furlough they should remember that redundancy pay should be at 100 per cent – not 80 per cent.
“If anyone is facing redundancy and doesn’t know where to turn they should check our online advice, starting with our checklist of 10 top tips."
Mark Diffley, who undertook the research, said:
“These figures show that there is significant public concern about job security over the next year; these concerns are broadly universal across age groups and geographic locations, although significantly higher among those from lower income backgrounds.
“That an overwhelming majority of people aren’t sure about their rights during the redundancy process shows the value and the need for Citizens Advice Scotland’s Redundancy Rights campaign, with young people and those from C2DE backgrounds having especially low levels of confidence in their rights.”