Each year after the NFL Rookie Mini Camp, every team hosts OTAs (Organized Team Activities). These OTAs being voluntary, this NFL season some players have opted not to attend the same due to the COVID-19 pandemic. Some veteran players don't participate in OTAs because of the risk of injury.Nevertheless, OTAs give teams a chance to work in a more casual setting compared to the strict schedule and demands of mandatory mini-camps and training camps. They also present additional opportunities for rookies to learn the playbook and schemes of the offense or defense.Most NFL teams are currently participating in OTAs, which will take place on multiple days.NFL 2021: OTA Dates, Locations and Schedule:Arizona Cardinals: June 2-4 and June 7-10Atlanta Falcons: June 2-4 and June 14-17Baltimore Ravens: June 2-4, June 7-8 and June 10-11Buffalo Bills: June 1-2, June 4, June 7-8 and June 10-11Carolina Panthers: June 1-3 and June 7-10Chicago Bears: June 1-3 and June 7-10Cincinnati Bengals: June 1-3 and June 7-10Cleveland Browns: June 1-3 and June 7-10Dallas Cowboys: June 1 and June 3-4Denver Broncos: June 1-2, June 4, June 7-8 and June 10-11Detroit Lions: June 2-4 and June 14-17Green Bay Packers: June 1-2, June 4, June 7-8 and June 10Houston Texans: June 1, June 3-4, June 7-8 and June 10-11Indianapolis Colts: June 2-4 and June 7-10Jacksonville Jaguars: June 1, June 3-4 and June 7-10Kansas City Chiefs: June 1-3 and June 8-11Las Vegas Raiders: June 1-3 and June 7-10Los Angeles Chargers: June 2-4, June 7-8 and June 10Los Angeles Rams: June 1-3 and June 7-10Miami Dolphins: June 1-3, June 7-8 and June 10Minnesota Vikings: June 1-3 and June 8-11New England patriots: June 1, June 3-4, June 7-8 and June 10-11New Orleans Saints: June 1-3 and June 7-10New York Giants: June 2-4 and June 14-15New York Jets: June 1, June 3-4, June 7-8 and June 10-11Philadelphia Eagles: June 2-4 and June 14-17Pittsburgh Steelers: June 1-3 and June 7-10San Francisco 49ers: June 1-2, June 4, June 7-8 and June 10Seattle Seahawks: June 1, June 3-4 and June 7-10Tampa Bay Buccaneers: June 1-3 and June 14-17Tennessee Titans: June 1, June 3-4 and June 7-10Washington Football Team: June 1-3 and June 8-10#Steelers Ben Roethlisberger finds RB Najee Harris out of the backfield pic.twitter.com/QiUxNJGGnA— SteelerNation (@SteeIerNation) May 25, 2021Where do OTAs take place?NFL OTAs take place at each team's training facilities. Unlike the official NFL Training Camp, these can take place at alternate locations too.What happens in OTA?The OTA schedule of teams consists of on-field and off-field work and practice. The onfield practices are not longer than two hours. The entire day, which usually includes practice, classroom/video study and team meetings, can't be longer than six hours. This season, each team is allowed to choose whether they would like their meetings in-person or virtually. The OTAs are completely voluntary, although some players have contract bonuses if they attend.Today's #Bucs OTA practice report is up @PewterReport!• Details on Darden's big day• Mickens taking him under the wing• Couple struggling CBs• One roster addition switching positions?• Good luck vs Gio, rookie LBs• MUCH morehttps://t.co/SmnQSVldcA— Jon Ledyard (@LedyardNFLDraft) June 1, 2021Enjoying Sportskeeda's coverage? Please take a 30-second survey to help us deliver the best content around NFL and College Football.