I would say all the above...
Sonnet 43 is a love poem in the form of a sonnet. A sonnet is a 14-line poem with a specifc rhyme scheme and meter (usually iambic pentameter). This poetry format—which forces the poet to wrap his thoughts in a small, neat package—originated in Sicily, Italy, in the 13th Century with the sonnetto (meaning little song), which could be read or sung to the accompaniment of a lute.
1) Workers should have some say in their working conditions- This would most likely be said by a labor union. The whole purpose of creating a labor union is to have workers organize to fight for better working conditions. During the 1800's, labor unions become a significant part of American society.
2) Unskilled workers should not expect to receive high wages- This would most likely be said by management. Business managers often reward individuals with unique skill sets by paying them more.
3) The cost of replacing experienced workers is higher than the cost of raising wages.- This would most likely be said by a labor union.
The surface could show erosion from water