Sources	Definition
[60]	HRO is a trend that belongs to shared services as a gateway to outsourcing, moving towards comprehensive outsourcing, growth in offshoring, expanding service offerings, focusing on process quality and measurement, and continuing globalization.
[61]	A phenomenon in which a company hands over a part of its in-house operations to a third party and builds a contractual relationship for HR services with an external provider is defined as Human Resource Outsourcing.
[60]	When core and non-core HR-related work are performed by external personnel rather than the company's regular employees, it is called human resource outsourcing.
[62]	HRO is a medium to obtain services from a third party or delegate partial or complete responsibility of HR function.
[61]	HR outsourcing is an option for companies that provides an opportunity to rid themselves of problems caused by ineffective HR departments and to exert pressure on them.
[5]	HRO occurs when a business instructs an external supplier to take responsibility and risk for HR functions and performs these tasks for the business.
[63]	HRO occurs when an organisation shares its human resource functions and transfers the responsibility of internal work to an outside supplier to obtain a specific service. It is characterized by one-way resource flows, from the provider to client, in exchange for predetermined favor, with typically no sharing of profits or mutual contribution. This distinguishes HRO from alliances, collaborations, or joint ventures.
[5]	A contractual agreement between an employer and an external third-party service provider whereby the employer transfers responsibility and management for certain HR, benefit, or training-related functions or services to the external provider.
[62]	HRO can be defined as a solution that enables human resource departments to obtain services with high added-value and reduced costs, thereby helping them maintain a competitive position. This process involvesentering into a contractual agreement with a third-party service provider.
[21]	HRO is a business model that offers potential solutions for cost considerations, specialization, acquiring new technology, minimizing risk, and mitigating internal bias through contractual agreements with external service provider.
[64]	Human resources outsourcing is not a fad but a tool to enhance the human resources value chain and foster the development of human resources as a business partner and strategic enabler in achieving business objectives.
[24]	HRO deals with personnel-related matters that are contracted to other organisations. It refers to the transfer of HR-centric responsibilities, including Human Resource Management functions (staffing duties), to external third parties.