Getzlaf, Bagg and Picard are under contract to the CFL club through the 2015 season while LaBatte's deal covers the 2016 campaign.
Getzlaf, 30, a Regina native, has played his entire seven-year CFL career with the Riders. Getzlaf had 63 catches for 1,045 yards and seven TDs during the regular season before adding three receptions for 78 yards in being named the top Canadian in Saskatchewan's 45-23 Grey Cup win over Hamilton.
Bagg, 28, of Kingston, Ont., completed his sixth season with Saskatchewan, registering 34 catches for 430 yards and four TDs. Bagg enters the 2014 campaign with 168 career receptions for 2,365 yards and 12 touchdowns.
LaBatte, of Weyburn, Sask., was the CFL's top lineman this year as well as a league all-star. The former University of Regina star was selected in the first round, sixth overall, by Winnipeg in the 2008 CFL draft.
Picard, 31, of Ste-Foy, Que., joined the Riders as a free agent following the 2012 season. He started all 18 regular-season games and the club's three post-season contests.