It's not always easy working out which union to join.
For some jobs there is only one right choice. For others there is a range of unions from which you can choose.
But there are some simple principles.
Unions are about people working together, so it always makes sense
You can find out whether your employer recognises unions or is a union recruitment target (and is on our database). There are two ways:
The union finder is based on a database maintained by the independent Labour Research Department of which sectors unions cover and which employers already formally deal with unions. It can only be as good as the information unions supply. If there's a gap you can report it here.
You can also browse two lists of unions - one organised alphabetically and one by type of union.
If you are still stuck, you can email the TUC directly for advice.