Large shares of non-standard workers are the result of longer-term structural changes in the labour market. Where they are increasing, gaps in unemployment insurance systems are likely to become evident. On the other end of the spectrum, prime-age workers in nine countries satisfy both contribution and employment requirements with 6 months of full-time work or less (Canada, France, Greece, Iceland, Japan, Korea, Netherlands, Norway, United States). There are no employment or contribution conditions for (means-tested) unemployment benefits in Australia and New Zealand. In addition to work-history requirements, benefit rules may however stipulate other conditions which may preclude access to unemployment insurance for part-time workers, even if they have long and relatively stable work records. For instance, in a number of US States, minimum requirements on previous earnings can make part-time low-paid workers ineligible for unemployment insurance.