More than 50%. According to the query of the trade union network, the voting of the workers' congress can be done by raising hands or by voting. Major issues involving the vital interests of employees must be approved by more than 50% of the votes of the workers' congress. The resolution of the workers' congress needs to specify the time, place, host, attendees, agenda and other contents of the meeting, and write down the resolutions item by item according to the agenda order, and finally sign and seal them.