yes. when you enter singapore you show passport + WP/SP/EP card to immigration officer.

if you did fingerprinting process during WP formalities i think you can also use the autogate directly. I know EP can, dunno whether SP/WP can or not.

You can register for autogate pass, just go to the office during work hours. Registration usually is done 10-15 minutes. You can use your passport for clearance 24 hours after registration. I'm with Work Permit pass, using it daily for commute from JB to SG.

You won't be taxed if your annual salary + bonus + all kinds of crap is below SGD$20,000. Anything above that, tax and of course pay in dollars!
No tax from Malaysia side, you don't work in Malaysia. No need tax.

yeah no problem
i use my company address but since it's paperless billing BUT still kena charge 0.25 cents for it.
they only need my IC for it ...

Hi.. Recently i accept an offer to work in singapore..the hr of the company ask me to medical check up at malaysia and pass the result to them so that i am eligible to work for them.. ( it mention in the terms & condition of the job offer).. But i also need to do medical check up also when i'm going there to report for duty (shud be for work pass application).
Do you all encounter this before? I mean to have medical check up twice?