Regarding info from employer

[Ampatel]

Hello all,
Can any 1 plz tell me what info i should get from my employer before applying for Cec??
I have been offered job as a subway restaurant manager.
I am expecting my graduation on july from physiotherapy assistant program.
What letter/ details i should demand from my employer before he hire me??
Do i need to update cec regarding the job i am offered??

Thank you in advance.