This screening process takes three to five business days, depending on the amount of applications received. The formal application is included for new hires to fill out with their offer letter, and usually not before that point.Applicants will be required to fill out a SLCC Employment Application online. Just send a brief letter to the company thanking them for the interview opportunity or job offer. If you have made up your mind then write a simple letter telling them that you have decided to withdraw your acceptance letter.