The statement is strongly supported by the evidence. Source 3 (Reuters) and Source 4 (The Economic Times) both explicitly state that US layoff announcements declined in September. Source 4 also confirms the second part of the claim, reporting that 'year-to-date hiring plans are the lowest since 2009' and using the headline 'lowest in 16 years'. The evidence is direct, corroborative, and from credible news sources.