While filing an I-765 online is quicker and easier than sending a hard copy of the I-765 application to USCIS, filing electronically does not speed up the time it takes for USCIS to make a decision. Currently, it can take five months or more for USCIS to process an employment authorization application. Not to worry: If the STEM OPT I-765 application was filed on time, your candidate can continue to work for 180 days after the OPT EAD expires while the STEM OPT is pending with USCIS.