Oh no. The child was not doing works to get in the house. He fetched the slippers because he was secure with his father and did so out of love. Pure OSAS and you know it lol I believe the example was Dave's kid and I'm SURE that there wasn't any OSAS involved... this is MY story ok???
Seriously, the Catholic view does not involve fear that God is ever going to change His mind - the child can be completely secure with his Father and do everything out of love. The only thing he can't "know" is that HE (the child) will never decided to take his inheritance and go live with pigs.
Your little story full of OSAS and faith vs works. I can fetch my fathers slippers for lots of reason.
1. I have no choice. My father willed it. I have no choice.
2. I love my father but I don't know if he will love me back and let me stay with him if I'm bad so I'm going to do everything I can to please him.
3. My father loves me and tells me that I'm his child and no matter what I do He will still love me and always be with me. I fetch his slippers because I love him too and like to see him smile and be pleased with me.