It is increasingly important for companies to effectively communicate their web at work policy to everyone in the organisation to ensure safe and productive browsing and to avoid confusion.

Firms have generally become more relaxed about the personal use of IT at work, as the costs of supplying internet and PCs have come down. They should be reasonable in setting rules and communicate them effectively to employees, Netsafe executive director Martin Cocker says.

“Many companies are saying, `Yes, you can use Trade Me, but only in your lunch break’.”

However, Sarah Trotman, managing director of business network Bizzone, says businesses have become stricter about employees using social networking sites at work.

Firms are often finding that employees are “twittering” or blogging on behalf of the business without their knowledge, and employees are often more clued up about social networking sites and the web than business owners.

“It has become more challenging to control the amount of information going out about their own business.”

Mr Cocker says surveys have shown small and medium-sized businesses often have incomplete IT policies and security.

This was highlighted by the Safe Air email controversy. An employee at the Woodbourne aviation engineering firm was dismissed for sending 425 lewd emails at work over a six-month period, but the Employment Relations Authority ordered Safe Air to reinstate the worker, since he was unclear about acceptable standards for IT use.