In Britain, there are currently more than 200 employment tribunals on hold until a verdict comes through on a legal test case launched by Age Concern's campaigning organisation Heyday.
The charity claims that UK laws which permit employers to force workers aged 65 or over to retire without compensation breach a European Union equality directive.
Although the case suffered a setback recently when an advocate-general at the European Court of Justice made an initial ruling against it, a final decision from the court is not due until December.
Speaking to the Times, Age Concern's Nony Ardill said: "We know of at least 260 cases of people whose employment tribunals are on hold until we get a verdict on this case."
She added that there are thousands more workers who are approaching their 65th birthdays and are uncertain as to whether they will be granted the right to continue in their roles.