150. An employer shall—

(a) where—

(i) the risk assessment carried out under Regulation 149 reveals a risk to an employee's safety or health, or any possible adverse effect on the pregnancy or breastfeeding of an employee, and

(ii) it is not practicable to ensure the safety or health of such employee through protective or preventive measures,

adjust temporarily the working conditions or the working hours, or both, of the employee concerned so that exposure to such risk is avoided, and

(b) in cases in which the adjustment of working conditions or working hours, or both referred to in paragraph (a)—

(i) is not technically or objectively feasible, or both, or

(ii) cannot reasonably be required on duly substantiated grounds,

take the measures necessary to provide the employee concerned with other work which does not present a risk to the safety or health of, or any possible adverse effect on the pregnancy or breastfeeding by, the employee.