Corgey has been vice president of the Seafarers International Union (SIU), responsible for the Gulf Coast region since 1990. His responsibilities include supervision of all SIU activities from Charleston, S.C., to Brownsville, Texas, including Puerto Rico and hiring halls and offices in Houston, New Orleans, Jacksonville, Mobile, Port Everglades and San Juan. He oversees a staff of 25 representatives and administrative assistants while representing 7,500 members.

Corgey is a trustee for the Seafarers Pension Plan, Seafarers Health and Benefits Plan, Joint Employment Fund, Training/Safety Fund and Transportation Institute.  He serves as a vice president of the Texas AFL-CIO; as secretary-treasurer of the West Gulf Ports Council of the AFL-CIO Maritime Trades Department; and on the executive board of the Harris County AFL-CIO.