Ady Williams has resigned as Didcot Town manager with immediate effect after just four months at the club.
Didcot were relegated from the Zamaretto Premier League on the final day of the season and Williams says his decision is due to work commitments.
"It has nothing to do with the club or financial reasons, it's purely work commitments," Williams told BBC Oxford.
"I just don't feel I can give Didcot 100% and I want to thank everybody at the club, who have been so good to me."
This is the second managerial post for the former Wales international after he led Bedford Town to survival in the end of the Zamaretto Premier 2009/10 season.
The ex-Reading captain oversaw four wins, six draws and seven defeats after his arrival at Didcot in February and club chairman John Bailey admits the news of his resignation came as a surprise.
"I have to say we had high hopes for what he could have done for us during the coming season. We are very disappointed to lose Ady, it's come as a big shock to us," he said.
"But his family and career have to be his prime commitments, and there is no way this club would do anything to jeopardise that."
Didcot are expected to make an announcement on Williams' replacement within the next seven days.