Excessive personal web browsing is one of the many signs that an employee is unhappy at work. So is petty theft and serious sabotage.

It's a difficult balancing act trying to keep staff content without being walked over. You might be glad someone is on their way out, but that period beforehand is costly for all.

Experts say employers should exercise caution when approaching disgruntled employees or, better yet, seek professional advice. Credit:Nicolas Walker

You're not a mind reader, but you can read the signs.

Organisational psychologist Dr Michelle Pizer says it is important to ''trust your gut'' when it comes to gauging whether an employee is unhappy at work. Pizer says some of the indicators include: