Are the unions of today similar to the guilds of the Middle Ages?

Yes the unions and the guilds

are very similar

Explanation:

Modern Unions

The modern labor union descends from those medieval guilds. ... Union have elected officials, similar to guild masters, and often run apprenticeship programs for those interested in trying out the work the uniGuilds and unions are similar in that they create stability and stunt the growth of development, but differ in that guild members have no control unlike union members. Guild members had to abide by the rules of the guild while union members could basically make their own rules if majority of the union members agreed.on members do.