s 16 Voluntary pensions, etc.
Where any pension or other periodical payment is paid voluntarily to any person who has permanently ceased to exercise an employment (or to his widow, child, relative or dependant) by his former employer or the successor of his former employer, there shall be deemed to be a source of that person or of his widow, child, relative or dependant, as the case may be, in respect of that pension or payment and that pension or payment shall be deemed to be gross income from that source chargeable to tax.