Workhorse movement is a label given to certain watch movements by enthusiasts and collectors in many watch communities. The term is no officially used by movement manufactures, but has become a selling point in blog reviews and
A tried and true workhorse should be a simple/minimalist design that does the job efficiently with as few moving parts as possible, while still being effective at maintaining a track record of being reliable, acceptably accurate, not too expensive, and easy to service (or at least generally affordable to service).
A workhorse movement can be of any origin, although the most commonly known workhorse movements are Swiss made ETA/Sellita and Japan made Seiko/Miyota.
You may also hear watches being referred to as workhorses, for example the Seiko Monster.
The most common examples of workhorse movements are: