6.—(1) In order to be regarded as available for employment, a person must be willing and able to take up employment of at least 40 hours per week, unless he has restricted his availability in accordance with regulation 13(3) or (4) (additional restrictions on availability for certain groups) or regulation 17(2) (laid off and short-time workers) or 2 or more of those provisions.
(2) In order to be regarded as available for employment, a person must be willing and able to take up employment of less than 40 hours per week but not for a greater number of hours per week than the number for which he is available in accordance with regulation 13(3) or (4) or regulation 17(2) or 2 or more of those provisions.