Encourage open communication
One of the best ways to promote a collaborative culture is to encourage open communication between employees. Encourage employees to share their ideas and thoughts, and create an environment where everyone feels comfortable expressing themselves. If you have team meetings, start them off with an icebreaker so that everyone has a chance to introduce themselves and share something about themselves. This will help employees feel more comfortable talking to each other and make it easier for them to collaborate. You can also set up informal networking events or social gatherings outside of work hours so that employees can get to know each other on a personal level. Getting to know your coworkers personally will make it easier for them to trust and work with each other.