The location of the talk is very important
No one will listen to what you are saying if they are shivering cold or sweating in the heat. Most talks are held in a lunchroom, training room or a common area that can be quite comfortable.
Another good practise I have seen is to ask different employees to deliver the talk, this works well in smaller workplaces (less than fifty employees) as everyone knows that they will have to do a talk at some stage during the year. (Assuming weekly talks)
These talks can also be used to convey social messages, someone’s birthday or important date. And can update people on the welfare of workmates that are sick, injured or changes to the business. Run a regular safety talk, a great way to share.