ECOPETROL S.A. | CIK:0001444406 |

The following table shows the movement in liabilities and assets, net of post-employment benefits and termination benefits, as of December 31, 2017 and 2016:

		Pension and bonds (1)						Other						Total
		2017			2016			2017			2016			2017			2016
Liabilities for employee benefits
Opening balance			12,463,433			10,435,546			5,041,133			4,170,047			17,504,566			14,605,593
Current service cost			-			-			52,164			53,771			52,164			53,771
Past service cost			-			-			-			164,271			-			164,271
Interest expense			872,524			876,076			350,060			333,894			1,222,584			1,209,970
Actuarial losses (gains)			1,621,184			1,915,767			1,012,205			616,834			2,633,389			2,532,601
Benefits paid			(809,677)			(763,956)			(350,130)			(297,684)			(1,159,807)			(1,061,640)
Closing balance			14,147,464			12,463,433			6,105,432			5,041,133			20,252,896			17,504,566
Plan assets
Opening balance			12,123,175			11,181,604			2,473			-			12,125,648			11,181,604
Return on assets			848,677			950,704			385			-			849,062			950,704
Contributions to funds			-			-			22,465			-			22,465			-
Variation in the ceiling of assets			-			379,884			-			-			-			379,884
Benefits paid			(809,677)			(771,528)			(22,078)			2,406			(831,755)			(769,122)
Actuarial gains (losses)			308,988			382,511			-			67			308,988			382,578
Closing balance			12,471,163			12,123,175			3,245			2,473			12,474,408			12,125,648
Net post-employment benefits liability			1,676,301			340,258			6,102,187			5,038,660			7,778,488			5,378,918