Most employees don't seem to be in support of the unions at this point though? It's a bit hard to tell as there are no official numbers, but from what I've seen it seems like ~90% or so of employees at Tesla remain at work. And there is a high demand for their services, so they could easily go to other companies for work if conditions are bad.
Not all workers have joined the union and wouldn't get paid by the union to strike. But unions use sympathy strikes against companies that might retaliate against their workers if they strike, Tesla has already made threats. So going by how many of the workers at Tesla are striking or not is not a good measurement.
The union is offering free memberships and 130% of normal pay. Tesla employees still don’t want to strike [1]. This is why the unions are using these extreme tactics.
