Pamela Ramsey Taylor, who runs a local non-profit group in Clay county, will resume work on 23 December, the Charleston Gazette-Mail said.
The screen grab of the post was widely shared online.
Local mayor Beverly Whaling resigned over the controversy, after she posted "Just made my day, Pam" to the comment.
The Gazette-Mail quoted a letter from the acting director of the non-profit group as saying Ms Taylor would resume work at the Clay County Development Corp on 23 December.
In her Facebook post, Ms Taylor had said: "It will be refreshing to have a classy, beautiful, dignified first lady in the White House. I'm tired of seeing a Ape in heels."
A petition calling for Ms Taylor and Ms Whaling, the mayor of the town of Clay, to be sacked collected more than 85,000 signatures.
Clay town has a population of just 491 and has no African American residents, according to the 2010 census.
More than 98% of Clay County's 9,000 residents are white.
The Clay County Development group, of which Ms Taylor is the director, is partly funded through state and federal grants, and the group provides services to elderly and low-income residents.
The state commissioner, Robert Roswall, warned at the time that the agency risked losing funding over the issue.
The controversial Facebook post spread across US and international media outlets.
Ms Whaling issued a written apology, saying that her comment was not intended to be racist.
"I was referring to my day being made for change in the White House! I am truly sorry for any hard feeling this may have caused! Those who know me know that I'm not in any way racist!"
Clay's town council issued a brief statement apologising to Mrs Obama and condemning the "horrific" post and said "racial intolerance isn't what this community is about".
Ms Taylor told local news outlet WSAZ, which first carried the story, that she acknowledged her Facebook post could be "interpreted as racist, but in no way was intended to be", and that she was expressing a personal opinion on attractiveness, not the colour of a person's skin.
She told the news station she was considering legal action for slander against unnamed individuals.
The state voted for Donald Trump in the presidential election, giving him 68.7% of ballots cast.

Brett this week told BBC Scotland he hoped to have a future with Cowdenbeath but would accept their decision.
And the 24-year-old has now been dismissed by the Central Park club.
This week Brett was also banned by the Scottish FA for four matches, with a further four suspended, for offensive posts on Twitter.
Brett was initially suspended by Cowden as a result of the betting offences, which came to light after the SFA looked at his Twitter account over the alleged offensive tweets.
It was found that he had placed 2,787 bets, with eight of those against his own team, and five of those involving matches in which he played. Players in Scotland are not allowed to bet on any football matches.
Brett had faced a traumatic few years in his personal life, with his 22-year-old wife having died of cancer in January 2015, four months after their daughter Mollie, who was born prematurely, had died.
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Cowdenbeath revealed a club hearing over the betting offences had determined the player was guilty of gross misconduct, and said it was with a "very heavy heart" that the board decided to dismiss the player.
A statement read: "The board's duty was clear. A player betting on his own team to lose, often in matches in which he was playing, is not a situation Cowdenbeath FC could accept or excuse. Simply put, no Cowdenbeath FC player committing such an act could remain in the employ of the club.
"The board of Cowdenbeath FC therefore has today conveyed to Dean its decision is that he is dismissed and his employment has been terminated without notice. We believe this decision to be one that any reasonable employer would make and that it is both fair and reasonable in the circumstances."
The club also revealed that the SFA had found Brett guilty of making "comments upon a social networking site, namely Twitter, that were of a discriminatory, and offensive nature, based upon sexual orientation as well as comments that were otherwise of an offensive nature," resulting in the ban.
A woman suspended after calling First Lady Michelle Obama an "ape in heels" in a Facebook post is set to return to work in West Virginia, local media say.
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Cowdenbeath defender Dean Brett has been sacked by the League Two club after admitting betting against his own team.