The Finance Sector Union urged members to vote against MyState's (ASX:MYS) offer for their new enterprise agreement, according to a Thursday statement by the union.

The union said it would seek to resume talks with the bank and will consider applying for an "intractable bargaining" declaration and workplace determination from the Fair Work Commission if no better offer is made by mid-December.

MyState did not immediately respond to MT Newswires' request for comment.

Shares of MyState rose nearly 1% in recent Thursday trade.