Every time someone hits the “like” button on your content, the social network receives the signal that this is valuable content.
As a result, you start to get organic impressions in addition to the impressions of the network of the person who “liked” your post.
The more people who hit “like” on your post, the more visible it become to others, which means even more people will “like” it, and so on…
So, getting 100 likes (or whatever number of co-workers you have) is not the goal in itself. It’s just a way to start and speed up the spread of your posts across your social networks