Arrangements on winding up require trustees, with approving authority approval and conditions, to provide annuities to employees and dependents. When an employer's business is to be closed or discontinued, trustees must, with prior approval of the approving authority and subject to imposed conditions, make suitable arrangements to provide annuities to current employees and, on death, to their widows, children, or dependents; trustees therefore require authorization and must comply with any conditions set by the approving authority before implementing these post-closure annuity arrangements.