This is hardly surprising, as until President Trump signed the GOP tax bill at the end of December, he had made essentially no policies changes which might have been expected to meaningfully affect the economy, which means that employment has followed Obama-era trends out of inertia.  

However, it is unlikely that the trend will continue unaltered.  With unemployment reaching historically low levels, we would at the very least expect things to level off, and presuming tight labor markets eventually translate into rising wages, the Federal Reserve will likely force the issue by raising interest rates to head off what would still be very low inflation.  How all of this will interact with the deficits created by the tax bill, which will tend to drive up interest rates in themselves since we’re at full employment, and the cumulative impact of the Trump administration’s general disregard for standard practices of good governance, which may result in anything from a trade war to a real war, is much hazier.  To put it simply, the employment picture in 2018 will be much more Trump’s creation than 2017 was.