Once again thanks for the replies and here is an update on the situation:
My BOM met with me yesterday after their monthly meeting and informed me that they had reconsidered my submission and had agreed to allow me work the hours requested. It will be on a trial basis (which I originally suggested) and will be reviewed in 2 months. They gave me no explanation as to why they originally refused me, or why they changed their minds............am a bit baffled..........but happy!