The increasing influx and settlement of migrants had brought "negative and unwanted changes" in the state, Dal Khalsa spokesman Kanwar Pal Singh said.
"Badal has failed to realise that the influx of migrants has had serious socio-economic-cultural ramification for Sikhs in particular and Punjab in general," he said.
"By encouraging them to get settled in the state, the SAD has joined the club of parties, including the BJP and the Congress, serving the interest of Delhi," he said.
"It is clearly vote-bank politics that will harm the interests of Punjab," he said.
Yesterday, lauding the role of migrant labourers in the overall development of Punjab, Badal said his government would provide free education and health-care facilities to them.