Not a problem - the purpose of the forum is to share knowledge; we all start out with a little and hope to gradually improve on it 
It does sound like a risk assessment is required to consider suitable controls. Visual inspection as a sole measure has its limitations - clear glass fragments within clear glass jars aren't necessarily going to be easy to see, and doing that type of work can be very monotonous such that it's very easy to lose focus/become blind to what you're actually supposed to be doing. A rotation system can help, so that no one is spending extended periods doing the same task, but looking at other types of controls you could implement is certainly worthwhile.
In terms of potential sterility, how are the jars actually supplied to you? I've seen a lot of glass packaging shipped without lids, just covered with e.g. plastic film or similar, so certainly wouldn't be sterile. For many sectors this isn't really an issue - lots of e.g. glass drinks bottles are washed and then used for either hot fill or in-bottle pasteurisation, so this cleans and then "sterilises" (or a close approximation thereto) at point of use. The manufacturer may not be expecting direct use without a cleaning step, so I'd discuss this with your supplier in the first instance.