Introduction
Imagine this: you’re Mwangi, an ordinary bank employee just trying to make it through Nairobi traffic, your boss’s endless emails, and the occasional underwhelming office tea. Then, one day, you notice a suspicious fellow with dark glasses trailing you from your matatu stop to your neighborhood kiosk. No, it’s not a movie scene. It’s your employer’s private investigator, hired to shadow your “private affairs.” If you think this sounds like a bad Nollywood plot, the court thought so too. In Mwangi v Absa Bank, the judge basically told the bank: “Relax! You’re not James Bond. Following your employee home is not part of corporate governance.” Employers may investigate what happens at work, but once they stray into your personal life, whether that’s spying on your love life, your shopping habits, or your favorite mutura spot, they’ve crossed into unconstitutional territory. Privacy is a right, not a perk.

Musa & Another v Makini Schools
On the other side of the coin, we have Musa & Another v Makini Schools. Here, an employer poked around an employee’s work-issued laptop. The court shrugged and said: “Well, that machine belongs to the school, so fair game.” Employer-provided devices are like company cars: you may drive them, but don’t be surprised if the boss checks the mileage. What the court made clear, however, is that the line is bright red: your personal phone or private laptop is sacred ground. Accessing those without consent? Now that’s an unlawful privacy breach. So, where does this leave HR managers and eager employers itching to play detective?
Lawful Scope of Employer Investigation
Permissible
- Reviewing work emails, files, and communications on employer-issued tools.
- Investigating workplace conduct using internal records (like audit trails).
Impermissible
- Hiring P.I.s to follow staff into their private lives
- Confiscating personal phones, private laptops, or social media accounts.
Anything obtained through unlawful snooping is tossed out as evidence and might even cost the employer damages.