The move follows new allegations in the Sunday Times that staff at Jeremy Corbyn's office was directly involved in handling cases of alleged anti-Jewish racism.
A motion filed on Monday night's parliamentary Labor party meeting also required officials to publish their response to the Equality and Human Rights Commission's probe in how the party deals with anti-semitism allegations.
It also called on the party to "make a public statement of solidarity with the Jewish workers' movement after the 100-year Labor Party membership."
Labor MP Stella Creasy said that the motion to be voted on next week's PLP meeting "provides a clear way forward to address all reports of harassment and abuse, as well as suggestions for how transparency and solidarity can restore confidence "in how the party deals with the problem.
But in a challenging email to all members of the PLP, Labor Secretary General Jennie Formby said the Sunday Times allegations of the leader's office were categorically incorrect & # 39; were and insisted that & # 39; all complaints about anti-Semitism should be fully investigated in line with our rules and procedures and appropriate disciplinary action ".
She carried out a bitter attack on MPs who criticized party officials in the media, adding: "We do not tolerate leaks of staff correspondence, party reports, and we dispute the claims of the article from which lines were selectively leaked from e -mails to a rough representation of their total content.
"We regret that such material has found its way into the public domain: selective and inaccurate reporting by right-wing media that is politically hostile to the Labor Party does not help the victims of abuse, the subjects of disciplinary proceedings or the wider party."
Ms. Formby added: "The PLP will also know that the Unite LE / 975 union of Labor Party employees has recently adopted a motion stating that" attacks on one or more employees are an attack on every staff member, since they are all of us the risk of public criticism in the media and abuse on social media, without any public right to answer & # 39; and insisted that & # 39; Labor MPs must always respect and defend the values and beliefs of the party, and therefore never publicly attack any party personnel, directly or indirectly, on or outside the archive ".
"I support that policy and I hope that the PLP can express and support its support for the staff."
One Labor MP described the email as "idiocy" and added, "It's all about MPs and nothing about the problem."
Mrs Formby also received criticism of the e-mail during Monday's PLP meeting, with backbencher Clive Efford who said that her e-mail "does not resemble reality".