The sometimes almost-always thankless job of being a cabinet secretary means that by a president's second term, most of his original Cabinet has headed for the exits by now. With Health and Human Services Secretary Kathleen Sebelius leaving her post soon, there are only five members of President Obama's original cabinet members left. And more than half of Obama's current cabinet came in the door in 2013, as his second term began.

The club of original cabinet members is growing smaller by the day. So,who -- if anyone -- will stick it out to the end?

1. (tie) Education Secretary Arne Duncan: 1,907 days

(AP Photo/Michael Sisak)

1. (tie) Agriculture Secretary Tom Vilsack: 1,907 days

(AP Photo/Evan Vucci)

1. (tie) Veteran Affairs Secretary Eric Shinseki: 1,907 days

(Matt Eich for The Washington Post)

4. Housing and Urban Development Secretary Shaun Donovan: 1,902 days

(AP/Susan Walsh)

5. Attorney General Eric Holder: 1,894 days

(AP Photo/Manuel Balce Ceneta, File)

6. Health and Human Services Secretary Kathleen Sebelius: 1,809 days

REUTERS/Larry Downing

7. Secretary of State John Kerry: 435 days

REUTERS/Jacquelyn Martin/Pool

8. Defense Secretary Chuck Hagel: 409 days

(AP Photo/Alex Wong, Pool)

9. Treasury Secretary Jack Lew: 408 days

SAUL LOEB/AFP/Getty Images

10. Interior Secretary Sally Jewell: 365 days

(Photo by Melina Mara/The Washington Post)

11. Energy Secretary Ernest Moniz: 326 days

Photographer: David Banks/Bloomberg

12. Commerce Secretary Penny Pritzker: 290 days

REUTERS/Chris Keane

13. Transportation Secretary Anthony Foxx: 284 days

(AP Photo/Susan Walsh)

14. Labor Secretary Thomas Perez: 263 days

(Photo by T.J. Kirkpatrick/Getty Images)

15. Homeland Security Secretary Jeh Johnson: 110 days

(Photo by Andrew Burton/Getty Images)