"(He fixed the walls and replaced the monitor.)" Depending on where this happened it might be illegal. Employees spending personal money on business stuff (wit

"(He fixed the walls and replaced the monitor.)" Depending on where this happened it might be illegal. Employees spending personal money on business stuff (without expensing them) is a big no-no. You might need to consult a lawyer to find out if you're now exposed to legal action - especially if you fire him.