(b) Fees and other revenues levied within the scope of the granting of titles for the exercise of activity and monitoring of operators and providers of communications services; (c) Proceeds derived from contractual fines, as well as from penalties imposed under the terms established by law; (d) Revenues derived from the provision of services, notably from its laboratories; (e) Any other revenues, income or amounts derived from its activity or that may belong or be allocated to it by law or contract, as well as any grants, subsidies or other forms of financial assistance; (f) Proceeds derived from the disposal of its own assets or from the establishment of rights over such assets; (g) Interest resulting from financial applications. Section 41 Expenditures ARCOM’s expenditures are those that, having been realised within the scope of the exercise of the responsibilities and competencies vested in ARCOM, pertain to charges arising from its activity and the acquisition of fixed assets. CHAPTER Services and staff Section 42 Services ARCOM has administrative and technical support services, as approved by the Board of Directors, depending on the approval of the work plan and budget. Section 43 Staffing Regime 1. ARCOM staff is subject to the legal regime of individual employment contract. 2. ARCOM staff is covered by the general regime of social security; 3. ARCOM may be a party to collective employment regulation instruments. 4. Staff recruitment shall be preceded by a public notice and shall be conducted on the basis of objective selection criteria, to be established by ARCOM regulation. 5. Conditions for work performance and discipline shall be defined by ARCOM regulation, in compliance with the imperative legal provisions of the regime of individual employment contract.