hi karen,
dun worry. before i got my SPR, i 'm working under employment pass. depending on your pay, you might get working permit or employment pass. After that you can ask your company to sponsor your SPR application. That was what i did. My company sponsor me for abt 5 years before I change it to my husband sponsporship. He's a singaporean too.
By the way, when i went to extend my PR, the IRA officer asked me whether do i really want to change cos she said if i divorce i will lose my PR. She said better be under company. I never tot of divorce, i just tot, if i leave my current company, then i need to change sponsorship again? If i change to be under my husband, i sure won't need to change husband right? of course considering that i'm expecting my marriage to be till death do us apart kind lah..hahaha..