Possessive phrases containing, 'on' can use either "son/sa/ses" if on is used in a general sense ('one', 'people'), or "notre/nos" when on means 'we':
On est son propre maître.
One is one's own master
On aime toujours sa famille.
One always loves one's family. / People always love their family.
On mange notre repas.
We are eating our meal.
On porte nos sacs
We are carrying our bags.
Learn more about these related French grammar topics
Examples and resources
Q&A
Chris
Kwiziq community member
6/11/17
Jim
Kwiziq community member
7/11/17

Cécile
Kwiziq language super star
22/06/18
Hi Dzoan,
I can confirm the reflexive pronoun for on/il/elle is 'se'.
On se parle tous les jours. = We speak to each other every day.
On nous parle tous les jours = They speak to us every day.
Hope this helps!

Aurélie
Kwiziq language super star
8/02/17
Cathy
Kwiziq community member
21 February 2018
2 replies
How to determine if it's a general statement
Chris
Kwiziq community member
21 February 2018
21/02/18
Hi Cathy,
if substituting "one" for "on" makes more sense than "we", it is a general statement. For example:
On prend nos vacances l'été. -- We take our vacation in summer (we = us in particular).
On prend ses vacances l'été. -- One takes one's vacation in summer (we = in general).
I hope that helps, -- Chris (not a native speaker).
Cécile
Kwiziq language super star
21 August 2018
21/08/18
Hi Cathy ,
You can also think 'people' or 'in general' to the general rather than specific statements.
Hope this helps!