Bullying, Fear and Impunity: Death of Senior Manager Exposes Toxic Culture at KCB Under the Iron Fist of Managing Director Annastacia Kimtai
Days after a senior manager at KCB Bank Kenya took her own life following what colleagues described as sustained workplace harassment, fresh details have emerged pointing to a toxic culture that insiders say is perpetuated from the very top.
The suicide of Rosemary Koech Kimwatu, the bank's Head of Data Protection, has opened a floodgate of testimony from current and former employees who have come forward to describe a workplace where staff are routinely belittled, overworked, and terrified of speaking out against their superiors.
Before her death became public through official channels or mainstream media, a leaked message had already begun circulating on social media, revealing that Rosemary had formally reported her concerns in writing.
The message detailed how she had lodged complaints with KCB's Human Resources department, the Chief Executive Officer, and even Safaricom, alleging that her direct supervisor, Faith Basiye, the Group Chief Risk Officer, was mishandling her and contributing to her deteriorating mental health.

Despite these urgent pleas, none of the complaints were taken seriously.

At the centre of this environment, according to multiple sources who spoke to this publication on condition of anonymity for fear of reprisals, is none other than the Managing Director (MD) Annastacia Kimtai, a 27-year banking veteran who made history in April 2023 when she was appointed as the first woman to lead the institution since its inception, and who now stands accused of fostering a culture where fear, intimidation, and unreasonable demands have become the norm rather than the exception.
While Kimtai's appointment was celebrated as a milestone for gender equality in Kenya's corporate sector, insiders now paint a very different picture of her leadership, describing a management style that is authoritarian, dismissive, and deeply out of touch with the welfare of the thousands of employees who work under her.

"Annastacia runs the bank like a personal fiefdom," a former senior manager who worked closely with her told this publication.
"She demands absolute loyalty and unquestioning obedience, and anyone who dares to question her decisions is either sidelined, humiliated in meetings, or simply pushed out of the bank. She controls everything, and she has surrounded herself with people who will never challenge her."
Another source, a current employee who has been with the bank for more than a decade, described the psychological toll that working under such leadership has had on staff, saying that the pressure is relentless and that employees are expected to be available around the clock, with any failure to respond to calls or emails within minutes being met with accusations of laziness or incompetence.
"People are terrified of making mistakes because the consequences are severe, and there is no room for learning or growth. It is a culture of fear," the source said.
The revelations about Kimtai's leadership style come as questions mount over the broader workplace culture at KCB, which insiders describe as one where excessive workloads, unrealistic deadlines, and constant criticism have become routine, and where promotions and career advancement are often dependent on how well one can tolerate the pressure rather than on actual performance.
"Nobody leaves this bank because they have found a better opportunity. They leave because they cannot take it anymore. The turnover rate is staggering but nobody outside sees it because the bank is so good at keeping its dirty laundry hidden," one staff member said.
Another employee described how colleagues have broken down in tears during meetings, how some have developed stress-related illnesses, and how many have simply resigned rather than continue enduring the abuse, adding that the human resources department, which is supposed to protect employees, has instead become a tool for protecting senior management and silencing those who dare to speak up.
"The HR department is not there to protect employees," the employee said.
"It is there to protect the bank and the senior management. When you report a problem, you become the problem. That is how it works at KCB."
Rosemary's death has brought these hidden realities into sharp focus, and insiders say her case is not an isolated one but rather a symptom of a much deeper problem that has been festering within KCB for years, with many employees having witnessed similar patterns of behaviour directed at colleagues who were seen as threats to management's authority.
"What happened to her is tragic but it is also a direct consequence of the environment that senior leadership has created," one source said.
"When you subject people to relentless pressure, when you belittle them and make them feel worthless, and when you deny them any avenue to raise their concerns, you are essentially setting them up for a breakdown."
The source added that many employees had witnessed Koech's deterioration in the months before her death, and that some had even tried to raise concerns with human resources, only to be told that there was nothing that could be done.
"Rosemary was a brilliant, accomplished professional who had achieved so much in her career, but even she could not withstand what was being thrown at her," they said.
"She was a warning sign that nobody was willing to see."
Annastacia Kimtai's influence, according to insiders, extends far beyond the walls of the bank, for she is married to a powerful figure who serves as a Permanent Secretary (PS) in one of the government's ministries, a connection that has given her access to networks and political capital that make her virtually untouchable within the corporate and political establishment.
Her husband's position, combined with her own formidable reputation and her close ties to senior government officials, has created a situation where she is able to operate with impunity, knowing that there is no one who can hold her accountable for the way she runs the bank or for the suffering that her leadership style has allegedly caused.
"She is very well connected," a source familiar with her background said.
"Her husband is a PS, and she has friends in very high places. She knows that she cannot be touched, and she uses that knowledge to intimidate people. If you cross her, you are not just crossing a CEO but a whole network of power that can make your life very difficult. That is why people are so afraid to speak out."
Compounding the concerns about the bank's culture are reports about Kimtai's son, who insiders describe as a reckless young man who has been involved in multiple incidents of drunk driving, fights, and altercations, but who has consistently escaped consequences because of his mother's influence and his father's powerful position.
"The son is a complete menace," one person familiar with the family said.
"He has been arrested several times for drunk driving, but somehow the charges always disappear. He has been involved in fights where people have been seriously injured, but nothing ever happens to him. He knows he has immunity, and he behaves like he is above the law. It is the same entitlement that his mother displays at the bank."
While the son's behaviour is separate from the workplace issues at KCB, insiders say it is indicative of a broader pattern of entitlement and impunity that has come to characterise the Kimtai family's relationship with power, and that this same sense of being above accountability is reflected in how the bank is managed.
"They believe they are untouchable," one source said. "And unfortunately, they are right. When you have that kind of power and that kind of immunity, you start to believe that the rules do not apply to you, and that is exactly what is happening at KCB."
The revelations about KCB's workplace culture have already begun to attract the attention of regulators and labour rights organizations, with many concerned stakeholders now calling for an independent investigation into the bank's treatment of its employees and the circumstances surrounding Rosemary's death, arguing that the case has exposed a systemic problem that extends far beyond one institution.
"This is not just about one bank or one individual," a labour rights activist who spoke to this publication said.
"This is about a systemic problem in Kenya's corporate sector, where powerful executives are allowed to abuse their authority without consequence, and where employees have no meaningful protection against harassment and bullying."
It is further argued that the government must step in to strengthen labour laws and ensure that institutions like KCB are held accountable for the welfare of their employees, and that the time for empty statements and half-measures has long passed.
"We cannot keep losing talented professionals to preventable tragedies," they said.
"Something must change, and it must change now. If we do not act, we will continue to see more cases like Rosemary's, and we will have no one to blame but ourselves."
It remains unclear whether any internal investigations have been launched into the claims made by current and former employees, many of whom have expressed scepticism that the bank will take meaningful action.
Insiders say the bank's leadership is well aware of the problem and has chosen to look the other way because addressing it would require confronting powerful figures like Kimtai, something they are not willing to do, and because the bank's reputation and profitability are seen as more important than the welfare of its employees.
"The board knows exactly what is happening," one source said.
"They have received complaints, they have seen the turnover numbers, and they have heard the stories. But they are afraid of Annastacia. She has too much power, too many connections, and she has made herself indispensable. They would rather sacrifice the welfare of thousands of employees than take on someone like her. That is the sad reality of corporate Kenya today."
Rosemary's death, which was initially treated as a personal tragedy, has now become a symbol of a much larger problem that has been allowed to fester in Kenya's corporate sector for far too long, and those who knew her are determined to ensure that her story does not fade away quietly.
"She was a beautiful soul who gave so much to so many," one of her friends said.
"Her death must not be in vain. We owe it to her, and to all the other employees who are suffering in silence, to speak out and demand change. She deserved better, and so do all the others who are still trapped in that environment."
For now, the technology and data protection communities continue to mourn one of their brightest stars, while employees at KCB wait to see whether the bank will take meaningful action to address the culture that has been exposed, though many are not optimistic.