Odio a mi jefe o odio mi jefe?
?
5 Answers
With the 'a' because 'your boss' is both a person and the direct object of the sentence.
This lesson might help - The Spanish 'a' and its many uses - including the 'personal a'
as well as The Personal 'a' and why it is so important?

Yes if you are referring to a specific person or something that is very dear to you, you would the personal a . Maybe this will help.
Odio a mi jefe (he's a person). Odio mi trabajo (a thing).
Buena suerte con tu jefe y Felix Navidad! Good luck with your boss and Merry Christmas!
The personal "a" is used for direct object nouns that are specific person(s) as noted.
But the personal "a" can also be used for direct objects like alquien, nadie, alguno and ninguno and any other pronouns and numbers that refers to specfic person(s).
The personal "a" is not used with the verb tener and nouns not referring to specific persons like 'camareros' ( waiters) and 'cajero' in the following i.e. "The restaurant is looking for waiters and a cashier".
Your boss is a specfic person.
