ATHENS—Greece suspended a legislation package on Thursday with social benefits aimed at mitigating the effects of the financial crisis on the most vulnerable following concerns by the country’s international creditors, according to Greek government officials.

The government was hoping that the bill would sweeten the pill for the Greeks who have suffered the most from the successive waves of austerity and appease its lawmakers, who were forced to approve another round of unpopular economic measures on Dec. 15.

The...