This was a unique book, typical of japanese literature. 
Our protagonist felt completely exhausted and burnt out after spending 14 years in her previous job (the specifics of which weren't revealed until the very end). 
She goes to a recruiting agency and asks for "an easy job" that requires no brain power or anything like that.
The book has five chapters, each one about a different short-term job that she tries out. They vary from bus advertising to "an easy job in a hut in a forest".
The first chapter was very intriguing to me and I enjoyed it a lot, but by the end of the second one I started getting bored and so switched to listening to the audiobook while doing a jigsaw puzzle. 
There's nothing jaw dropping in this book, not much deep thinking or introspection, the protagonist isn't much inspiring or relatable and I never truly understood her.
Just an average book to me.