What are the Differences between Work Package and Planning Package?

本文详细解析了工作分解结构中的工作包与计划包概念,包括它们在项目管理中的角色、定义及如何区分二者。了解这两者的区别对于成功规划项目至关重要。

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In my various interactions with the project management professionals,I found that many professional find it difficult to distinguish between Work Package and Planning Package, so I thought of writing an article on the topic.

Before I start talking about it, let’s first look at Work Break Down Structure:

PMBOK® Guide Fifth Edition Defines Work Breakdown Structure (WBS) as

“A hierarchical decomposition of the total scope of work to be carried out by the project team to accomplish the project objectives and create the required deliverables”

WBS is an important component of scope baseline. WBS represents the total scope of work in hierarchical form. As we go down in hierarchy of WBS, each level represents a progressively detailed definition of project work.

For a successful project, the scope planning is very important as it provides the basis of further planning, monitoring & controlling and execution.

Differentiate-work-package-and-planning-package

WBS defines all the project and product deliverables in hierarchical form and gives an idea about which activities are need to planned, monitored and from which agreed point of WBS, cost of these activities will be tracking in company accounting system.

Planning package and work package are the components of WBS; let’s have a detailed look at these elements of WBS:

PMBOK® Guide Fifth edition defines Planning and Work package as:

Planning Package- A work breakdown structure component below the control account with known workcontent but without detailed schedule activities.

Work Package- The work defined at the lowest level of the work breakdown structure for which cost and duration can be estimated and managed.

In order to understand the difference between these two, first we need to realize the concept of progressive elaboration of scope. A scope that is planned for the near term is available in detailed form and future work is planned in higher level.

As we move towards execution, quality and availability of information gets increased for the work, we had planned at higher level form.

So WBS is decomposed at different levels as per availability of information. When the decomposition of upper levels of WBS components to the level where duration and costs are estimated with reasonable degree of confidence is not possible, the further decomposition is performed when these details gets available and deliverables of these higher level components gets agreed.

So the lowest level of WBS is known as Work Package where decomposition is performed to the level where cost and duration could be estimated and represent a verifiable component of product, service or result.

While for the components where details are not clear to the extent to produce verifiable subcomponent of product, service or result, we leave the decomposition further. Here, we do know the work content but detailed schedule activities are not possible to recognize – This level of decomposition is known as Planning Package. At later point of time when things become clearer, the planning package may get decomposed in work package(s).

A planning package may be converted to a work package when the lowest-level details of the work are defined, budgeted, and scheduled. Individual work packages are the building blocks of all project deliverables and form the basis by which the project is monitored, measured, and assessed.

So Work Package and Planning Package are different if following ways:

Work Package Planning Package
It’s a lowest level element of work breakdown structure, further decomposition will not be done beyond this level It’s also a lowest element at a given point of time but at later stage it will get decomposed into work packages
Work packages are planned by way of identifying activities under them, they are the primary input to identify activities process Planning Packages are decomposed into work package or they get converted into work package when we get more visibility of the work, planning package will not have activities under them

I hope this blog has sufficiently answered your all queries related to what are the basic differences between Work Package and Planning Package. Good Luck with your PMP® Certification Exam.

You can join the discussion on the same in our Forum. You may also want to check our other blogs on PMP® Trainings.


在 Python 中,`typing.List` 和 `list` 都是用来表示列表的数据类型,但它们有一些微妙的区别。 1. **类型提示(Type Hinting)**: `typing.List` 是从 `typing` 模块引入的一个泛型类型,用于声明变量或函数参数将存储的是列表。例如: ```python from typing import List my_list: List[int] = [1, 2, 3] ``` 这里我们明确指出了 `my_list` 将只包含整数。这提高了代码的可读性和文档性,虽然运行时并不强制类型检查。 2. **动态类型 vs 静态类型支持**: 如果你使用了静态类型检查器(如 PyCharm、Mypy 等),`List` 会提供类型安全的优势,帮助开发者发现早期的类型错误。 3. **灵活性**: `list` 是 Python 内置的动态类型列表,它可以存储任意类型的元素,包括未指定类型的元素。而 `typing.List` 则要求所有元素必须具有相同的类型。 4. **类型推断**: 在没有显式类型注解的情况下,Python 根据赋值和操作自动推断 `list` 类型。而在 `typing` 中,如果想要获得类似的行为,你需要显式地指定类型。 5. **鸭子类型(Duck Typing)**: Python 自带的 `list` 不受类型约束,如果你不介意类型错误,`typing.List` 的严格类型定义可能不如动态类型灵活。 总的来说,`typing.List` 更加严谨,适合大型项目中提高代码质量和类型安全;而 `list` 则更为灵活,适合快速原型设计和不需要严格类型检查的小规模代码。在实际编程中,两者可以根据具体需求灵活选择使用。
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