This Practice Note considers the right of employees and workers not to be subjected to a detriment, or dismissed, on certain grounds relating to health and safety in the workplace. It sets out who is protected, the qualifying period of employment, and the specified health and safety grounds, namely health and safety officials, participating in consultations, raising health and safety concerns, leaving work in the face of serious and imminent danger, and taking protective steps to avert serious and imminent danger. It covers selection for redundancy on health and safety grounds, and the remedies available for detriment and unfair dismissal. It also outlines the protections that may apply in relation to whistleblowing and trade union activities. An employee, regardless of length of service, has the right: • not to be subjected to a detriment (eg denied promotion), and • not to be dismissed on various grounds relating to health and safety. A worker, regardless of length of service, has the right not to be subjected to a detriment (eg denied