Some 40,000 applicants are still waiting to find out if they have been chosen for roles including result recording, overseeing athletes' travel arrangements and directing people to Games venues.
The 2014 organising committee received 50,811 applications for 15,000 "Clyde-sider" roles. Several thousand applicants have already been told they were successful.
A 2014 spokesman said the committee was aiming to notify the remaining applicants by the end of January.
However those who are unsuccessful still have a chance to take part as a reserve list will be drawn up.
Glasgow 2014 wants to create a group of people similar to the "Games makers" at London 2012 who helped to make the Olympics such a success.
Successful applicants will have four weeks to decide if they wish to go ahead with the role and training will begin in March.
However, there was some frustration from applicants who are still waiting to learn their fate a year after applying. Applicants must be available for at least eight days during the Games, between July 23 July and August 3.
One 37-year-old applicant said: "I am getting quite frustrated, especially as I have now missed the opportunity to buy tickets for the Games.
"Volunteering for the Games is no small undertaking as you agree to being available for at least eight consecutive days.
"At the moment I am holding on to holiday days at work in case I need them for the Games and obviously this has an impact on what I can plan with friends and family for the rest of the year."
A spokeswoman for 2014 said: "Our interview programme has now concluded and we are reviewing the results. More than 20,000 people have been interviewed by a team of under 300 pre-Games volunteers in just eight months.
She said it was expected that the vast majority of those who applied to be a Clyde-sider would hear by the end of the month.
She added: "We had more than 50,000 applications for up to 15,000 volunteer positions. We are grateful to all of those who applied for the offer they made to support the Games and to all of those who attended an interview.
"We are working with partners, including Skills Development Scotland, to provide everyone has missed out with information about other Games opportunities, sport participation and how to get involved in other forms of volunteering."
The name Clyde- siders was chosen by organisers and is a nod to Glasgow's River Clyde. Many Glaswegians who lived and worked in the shipyards during its ship-building heyday were known as Clydesiders.