The Tampa Bay Buccaneers announced their media schedule for the offseason, which implicitly announced the start of their offseason program, as well as most of their offseason schedule. They start on April 11, though they could have started a week earlier because the team changed head coaches. Here's the full schedule, with some details on what is and is not allowed at each point.
Monday, April 11 - Sunday, April 24
Buccaneers start their voluntary offseason workout program with phase one: strength, conditioning and rehab. No on-field coaching, no supervision by coaches who are not strength and conditioning coaches.