I'm sure it depends on the type of job you are seeking, but I have never seemed to have any problem getting a job. (I'm 53 and have changed jobs twice in the last 4 or 5 years.) I know some companies do discriminate, but at the bank I currently work for, all 3 of the ladies who work in accounts are 55+. One is 60. They were all hired within the past 2 or 3 years too. (They weren't hired young and stuck with it if you know what I mean.)
Again, it may be different with higher level, extremely highly compensated positions, but I would just encourage older job seekers not to get discouraged. Some places indeed discriminate, but others do
not. Just make sure you dress sharply, groom yourself well etc. And keep plugging....