GREEN BAY – The NFL announced the dates of the Packers' offseason workout program on Friday.

Green Bay's offseason program will begin on Monday, April 18, and conclude in mid-June.

The program begins with meetings and strength-and-conditioning work (Phase 1), continues with on-field group workouts (Phase 2), and then progresses to organized team activity practices (or OTAs, Phase 3).

OTAs will begin the week of May 23-26 and continue the week of May 31-June 3. The Packers are slated to have their mandatory minicamp from June 7-9, followed by one more week of OTAs.

The team will announce at a later date which OTAs or minicamp practices, if any, will be open to the public.

With the exception of the mandatory minicamp, the offseason program is voluntary for players, per the collective bargaining agreement with the union.