Resurssikalenteri

Resurssikalenteri is a calendar-based tool for recording and managing the availability, capacity and restrictions of resources such as personnel, equipment, and facilities used in projects and operations. It is commonly used within project management, operations planning, and enterprise resource planning systems to support scheduling decisions.

A resursikalenteri includes a list of resources, their working hours, scheduled leave, holidays, maintenance downtime, and other constraints. It can depict both individual resources and resource types and may support multiple calendars per resource to reflect different contexts (e.g., site-specific availability).

The main purpose is to enable capacity planning and resource leveling. By visualizing when resources are available or blocked, managers can avoid overallocation, forecast bottlenecks, and align tasks with real capacity. It also helps in budgeting and risk management by revealing impending shortages.

Implementation and usage: It is often integrated with project management or ERP software. Data sources include HR calendars, leave management systems, public holiday calendars, and maintenance schedules. It supports features such as non-working days, time zones, recurring patterns, and exception handling. The resursikalenteri is frequently used together with Gantt charts and resource allocation tools to drive scheduling decisions.

Challenges include maintaining accurate data, respecting privacy, and keeping calendars synchronized across systems. Changes in availability require timely updates to prevent misallocations. In Finnish practice, the term is used in both private-sector projects and public sector procurement to coordinate diverse resources across sites.

Example: In a construction firm, resursikalenteri tracks crew rosters, cranes, and vehicles. When a technician takes vacation, the calendar marks the absence and project managers adjust task assignments accordingly.