Arlington County government employees learned late Friday that about 20 of them may lose their jobs due to budget cuts later this year, amid an expected budget shortfall of $25 to $50 million.

County manager Barbara Donnellan notified the 3,600 county employees that in addition to the 20 people who accept early retirement offers, 46 more jobs will be cut and 20 of those jobs are currently filled. She said managers will try to move those workers into other empty positions, but she did not identify which jobs were being cut. Donnellan is scheduled to make her proposed budget public Wednesday.

The job cuts, first reported by the Arlnow blog, are not entirely unexpected. In November, the County Board ordered Donnellan to start trimming costs in anticipation of a possible tax hike for fiscal year 2014.