You are creating a business case for widening the scope of the current audiometry program to include seasonal workers, and overseas temporary workers. Writes notes on the following to include in your business case:
The circumstances when it may be required (pre-employment, periodically based on findings of workplace assessments, following complaints etc)
The use of audiometry to measure hearing loss; method, interpretation of audiograms and how the results should be used
The advantages and disadvantages of audiometry programmes, including legal implications