I am in my 7th year of extension and my H1-B expired in May 2005. My labor was filed in 2003. Can I change my job now so that my new employer files my labor using PERM and I receive the labor certification before my current extenstion expires in May 2006? My thinking is that if my labor comes before May 2006 then I won't need to extend my H1-B using the labor filed by my current employer.