Lumsden-Morse MLA Lyle Stewart has announced that he is resigning his seat due to health-related reasons.
Premier Scott Moe said he will miss working with Stewart and thanked him for his service to his constituents, the government, and the province.
Stewart was first elected in 1999 and was re-elected in the five subsequent provincial elections.
In 2004, he served briefly as Interim Leader of the Saskatchewan Party and Leader of the Opposition.
In government, Stewart served as Minister of Enterprise and Innovation, Minister of Agriculture, Provincial Secretary and Legislative Secretary responsible for Provincial Autonomy.
His resignation is effective this Friday, March 10.
A byelection will be held within six months of his resignation.