Which types of employees may qualify for a special certificate for the payment of a sub-minimum wage?

The answer is correct because certain groups of employees, specifically apprentices and individuals with disabilities, are often eligible for special certificates that allow for the payment of sub-minimum wages under specific conditions. This allowance is designed to promote opportunities for these individuals by enabling employers to provide valuable training and work experience while complying with labor laws.

For apprentices, these certificates enable employers to pay a reduced wage that reflects the learning aspect of the job. Similarly, workers with disabilities may qualify for a special minimum wage certificate that allows them to be compensated at a rate lower than the federally mandated minimum wage, based on their productivity and the nature of the work they perform.

In general, the other options do not specifically align with the criteria often set forth for special certificates. Part-time workers and interns may have their own wage considerations but aren't typically categorized under the same provisions as apprentices and individuals with disabilities. Full-time employees, by definition, are expected to be compensated at least at the minimum wage unless they fall into specific exceptions, and high school students may receive allowances for work-based learning programs but do not fall under the same category as apprentices and disabled persons for sub-minimum wage considerations.