Workington was appointed interim president until the end of the season, after Michael Daff was sacked by the city in early March.
He beat Craulle 5-1 in his first game before finishing fourth against Charlton, who scored the first goal in the first minute.
Because there are eight games left to play, Haderfield is sixth after reading.
They will travel to the middle of the table on Tuesday night and Workington believes that there will be more ups and downs in the coming weeks because they will look at the place of the offs.
“We came on Sunday and we digested the game and were closed,” the Spaniard said.
“All the things I saw in the game and when I looked at the return was just the same. The disappointment was that we fought in a few moments and reacted to the first goal.
“I said there would be no distress and there was a challenge and a little Rollorcoster, but we will deal with it and we will continue.
The players are an honest group that is related to reaction and you present it well.