need info. residence permit for non-EU (FM of EU citizen)

Hello to all members,
I have applied for residence permit on 01-11-2016 to stay in UK with my wife. She is Polish citizen. I had mention my wife as my Sponsor in residence permit application form and attached her work contract and few more proofs of her income.
But my question are:
1. that now she is going to change her job so I have to send her new work contract and details to home office or not ?
2. is there any minimum working hours requirements that she have to work in each week/month to be my sponsor?

Thank you,

1) Yes, as HO may check.

2) Under EU law, no.
As per UK MET test, yes.

SEND IT!

It will help you and no disadvantage.