In my opinion, it all depends on the word you are referring to.
If I may make a suggestion regarding Mr. Davies' amendment, I would suggest that the committee look at the direction its consideration of the bill is taking. As a rule, it is not possible to propose major changes to the definitions in a bill.
The committee can, however, put those definitions aside and see what happens with the rest of the bill. Should the committee decide that the bill must pertain to first responders, military personnel, and other categories only, that could be clarified elsewhere in the bill. It would then be possible to go back to the definitions and to the preamble and add those clarifications where necessary.
On the other hand, the bill could become much more restrictive if it were to apply to those kinds of workers only.