Age discrimination is an all too common reality in the workplace, affecting countless adults among the 40-plus demographic. A wide-ranging AARP study released in 2018 found nearly 2 out of 3 workers age 45 or older have experienced age discrimination on the job. What's more, according to Alex Mardirossian, a California attorney and partner at HM Legal Group who specializes in employment law, many older employees are unaware when it is happening to them. Employers, he said, will use an arsenal of excuses to validate such things as terminations and demotions that may be tied to age. Here are more than two dozen tips to identify it when it takes place and how to respond in such situations.