Resolution authorities should have ancillary powers to ensure the effectiveness of the transfer of shares or debt instruments and assets, rights and liabilities. Subject to the safeguards specified in this Directive, those powers should include the power to remove third parties rights from the transferred instruments or assets and the power to enforce contracts and to provide for the continuity of arrangements vis-à-vis the recipient of the transferred assets and shares. However, the rights of employees to terminate a contract of employment should not be affected. The right of a party to terminate a contract with an institution under resolution, or a group entity thereof, for reasons other than the resolution of the failing institution should not be affected either. Resolution authorities should have the ancillary power to require the residual institution that is being wound up under normal insolvency proceedings to provide services that are necessary to enable the institution to which assets or shares have been transferred by virtue of the application of the sale of business tool or the bridge institution tool to operate its business.