These terms are used interchangeably and many definitions include bullying as a form of harassment.

In terms of employment law, harassment relating to sex, race, disability, religion or age can also be unlawful discrimination. Sexual harassment is also a relatively new and potentially difficult area for employers. 

Employers who don't take reasonable steps to prevent harassment can be liable for the actions of their employees; and mobile phones and the internet massively increase the scope for such harassment.

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