Bloomberg is planning to slim its ranks, sources said on Wednesday.

The financial media giant, which employs about 2,400 journalists across the globe, is planning to lay off about 100 employees, or about 4.2 percent, in its editorial division as soon as Labor Day, The Post has learned.

Many of the layoffs are expected to target politics and government reporters out of the New York and Washington, DC, bureaus, two sources told The Post.

Mike Bloomberg is looking to cut the fat, one insider told The Post, adding that the spigot in new hires has been turned off.

The shrinkage is coming at a fraught time for the company. In June, a reporter described a “climate of fear” in a leaked memo, and the company fired Josh Topolsky, its digital editor, the following month.

Jill Watanabe, a Bloomberg spokeswoman, declined to comment, saying that the company won’t discuss personnel matters.