We don't have synonyms for stretch-outs yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are stretch out, stretch-out and stretchout.
(n) :
A practice of industrial operation, especially in the textile industry, by which workers are required to do additional work without a proportional increase in wages.
(n) :
A practice of industrial operation, especially in the textile industry, by which workers are required to do additional work without a proportional increase in wages.