(a) the fact that his employer has ceased or intends to cease—
:(i) to carry on the business for the purposes of which the employee was employed by him, or
:(ii) to carry on that business in the place where the employee was so employed, or

(b) the fact that the requirements of that business—
:(i) for employees to carry out work of a particular kind, or
:(ii) for employees to carry out work of a particular kind in the place where the employee was employed by the employer,
have ceased or diminished or are expected to cease or diminish.