Other operating income

Other operating income consisted of the following:

(€ thousand)20132012
Revenues from services rendered to Group companies and other related parties 75,667 70,529
Changes in construction contract work in progress 1,769 527
Other revenues and income from Group companies and other related parties 4,195 4,215
Other revenues and income from third parties 1,193 2,103
Total other operating income 82,824 77,374

Revenues from services rendered to Group companies and other related parties relate to services rendered by Fiat S.p.A. and management personnel to the principal companies in the Group (see Note 29).

Changes in construction contract work in progress relate to the current portion of fees payable to Fiat S.p.A. for activities carried out directly by the Company (management, coordination and organization) in relation to contracts with Treno Alta Velocità – TAV S.p.A. (now Rete Ferroviaria Italiana S.p.A.) that were still in progress at the end of the year (the Florence-Bologna and Novara-Milan lines – see Note 25).

Other revenues and income from Group companies and other related parties primarily consisted of cost charge‑backs, rental income on real estate and directors’ fees received from Group companies in relation to Fiat S.p.A. employees serving as board members.

Other revenues and income from third parties relate to miscellaneous income, cost charge-backs and other prior year income.