your current employer must have made an offer to give you a permanent job if you are accepted as a federal skilled worker, and
your temporary work permit must be valid both when you apply for a permanent resident visa and when the visa is issued.
In addition:
your work permit must have been confirmed by Human Resources and Social Development Canada (HRSDC) through a positive labour market opinion or
you must be in a category that is exempt from an Arranged Employment Opinion
in order for your offer of employment to be valid.