In this article, Junta Supremo Prayut says that...
Responding to a report that some staff members of the airline would stage a strike on Thursday, the prime minister said the staff would not strike but merely wanted to submit a letter to the management.
He added that a strike would be pointless as the management was trying to solve the financial problem.
PM blames previous governments for THAI’s financial woes
Prime Minister Prayut Chan-ocha has blamed previous governments for doing nothing to address the chronic financial problem in Thai Airways International, the national flag carrier.
http://englishnews.thaipbs.or.th/pm-...financial-woes
I think it's safe to assume that the ruling Military dictatorship would not allow a strike. They've granted themselves unlimited powers, via Article 44, so they could just arrest/disappear a few union leaders to bring everyone back into line.
I guess I'd be worried more about a slowdown or work to rule type action? But management has guaranteed no salary reductions for lower level employees so that may stifle any labor actions.