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 paragraph (3) or (4) of regulation 13 or paragraph (2) of regulation 17 or two 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 paragraph (3) or (4) of regulation 13 or paragraph (2) of regulation 17 or two or more of those provisions.