Worth one's salt American British phrase
This idiom "worth one's salt" is used after the person or things being refered.
If you say that "someone worth their salt would do something", you mean that they are good at their job and deserve respect if they do it.
I wouldn't be worth my salt if I didn't do it.
Any workers worth their salt would know how to deal with it.
Any teachers worth their salt make students enjoy the lesson.
Someone (usually a male) who is highly regarded or admired by others
To be successful and worthy of the money that one is being paid
1. Very good
2. Very thin
Used to say that doing something is always/never a wise or advantageous idea, or always/never produces a positive effect
To get a position through hard effort and experience.
The expression "worth one’s salt", which means you’re competent and deserve what you’re earning, is most often said to have its roots in ancient Rome, where soldiers were sometimes paid in salt or given an allowance to purchase it. The word salary is derived from the Latin “salarium,” which originally referred to a soldier’s allowance to buy salt.