Professional Service Pooling

The business world is highly dynamic and business enterprises will time and again have competence needs that cannot always be met by hiring full time staff. Such needs include;

Development of systems and structures for small businesses that cannot afford to recruit a high caliber manager or consultant.
Work requiring skills that do not currently exist within the business but the work load does not justify an additional full-time employee.
Specialized tasks that may require a consultant but the business cannot afford the services of a practicing consultant.

Some roles require an independent eye for independent validation, verification, monitoring and evaluation, technical audit etc. and therefore a full time employee, auditor or consultant could compromise integrity of the process.
Temporally relievers for employees who are on leave.
In these circumstances, a business may consider hiring a part time staff to work on site or off site. More on Professional Service Pooling