Can somebody please reply...Desperately need your comments and suggestions. Thanks.

Dear Friends,

Hi! My husband just returned from Qatar after 2months of working there. He took an emergency leave due to health reasons (nothing serious)and his visa (one time visit) was cancelled. He hasn't got a pataka yet. Now, he's got a job offer he's secured from an employment agency in Qatar. He would like to go back but we're faced with different issues/problems:
1) Is it really true that he needs to wait for two months before he can come back to work?
2) Will it be ok to use his old passport? There's no stamp yet.
3) If he request for a visit visa from the new company, how will it be processed here in the Philippines? Who will apply for the visa?
4) Lastly, will there be any problem if his old company finds out that he's back working in Qatar?

All your thoughts ans comments will be highly appreciated. Thank you!