In accordance with the available means, the occupational pension scheme within the framework of the Federal Act on Occupational Pension Plans for Old-Age, Survivors and Disability and its implementing provisions, in favor of the personnel of affiliated companies and their dependents, against the economic consequences of old age, death and disability. The foundation may provide benefits exceeding the minimum statutory benefits, in particular in cases of illness and accident. Employers, as natural persons, may insure themselves with the foundation under the same conditions as employees. Affiliation to the foundation takes place on the basis of a written agreement, which is subject to the approval of the foundation board and defines the relationship with the employers. Any insurance refunds and profit-sharing from insurance companies may be used in whole or in part to improve pension provision within the purpose of the foundation. The allocations in favor of the foundation are definitive and irrevocable and may never be withdrawn from the purpose of the foundation.