When you hire a new person, you want to show them the mission statement of your company: you company values and your culture.
The next step is involvement. You want your employees to write their own mission statement together with one small group of workers. That will create a special commitment to what they will write about. This is one of the most powerful strategies to create a strong company culture.
Prepare a foundation for the mission statement that you want your company to follow.
And make sure that every single person knows it and understands it.
Review the mission statement regularly.
Every employee should do this.
Organize every group of employees to write the mission statement on their own.
Without involvement, there is no commitment.