Employees can always sue if they haven’t been paid for their work—even if they’re in the country illegally and not eligible to work in the United States. Employers can’t use their undocumented status as an excuse for not paying minimum wage and overtime under the FLSA.

When an employee believes it’s necessary to end-run a supervisor to complain about potentially illegal conduct, resist the temptation to ignore the complaint. And whatever you do, don’t tell the whistle-blower to take it up with the supervisor.

Q. I am wondering about rules relating to overtime during weeks with holidays. We pay a higher rate than normal for employees who work on the day of a holiday. Do we need to include the additional pay rate in calculating any overtime owed during the same week? ...

In today’s economic climate, you might be tempted to forgo hiring a temp to fill in for an employee who’s out on FMLA leave. Especially if you initially believe the employee won’t be gone long, what’s the harm? But what will you do if the employee returns to a huge pile of work left undone during her absence? Think twice before you tell her to catch up or else.

Now that the Democrats have lost their 60-vote supermajority in the Senate, it will be that much more difficult for the Obama administration to make good on many of its pro-employee campaign promises. But this still could be a key year for Democratic plans to revamp our national employment laws. Here are seven key initiatives pending in Congress and what they could mean for your business if they become law.

Exotic dancers at the Penthouse Executive Club in New York City’s Hell’s Kitchen neighborhood are suing in Manhattan federal court, claiming their bosses have been raiding the tip box, pilfering money that rightfully belongs to the dancers. They allege the owners sometimes took so much money that some dancers’ pay fell below the minimum wage.

If you’re considering hiring inmates through a work-release program, carefully weigh whether you will have to pay them as regular employees under the FLSA, or whether you may be able to pay them less. According to a recent 5th Circuit decision, prisoners specifically sentenced to hard labor may not be covered by the FLSA. Their employers may pay them less than minimum wage, and they’re not eligible for overtime pay.

Q. Without authorization, one of our employees worked extra hours this week, even though we told everyone they needed approval to work overtime. Are we required to pay overtime for the unauthorized hours?

Q. We have salespeople who work on a straight commission basis. Do we need to track their hours?

Employers that want to avoid paying overtime to white-collar workers often invoke the Fair Labor Standards Act’s administrative exemption. For the administrative exemption to be legitimate, all of the following must be true:

If you classify some employees as exempt under the Fair Labor Standards Act’s professional exemption, make sure their jobs truly meet the criteria. Otherwise, you risk a potential wage-and-hour lawsuit for unpaid overtime.

The Superior Super Warehouse chain of grocery stores must pay $79,200 in penalties for allowing teenage employees to operate dangerous equipment. The U.S. Department of Labor cited the chain for violations of the Fair Labor Standard Act’s child labor provisions at 33 stores in Southern California.

If you ask workers to show up a little early to start their computers and get ready to work, be prepared to pay them for that time or risk getting sued. How to avoid such lawsuits: Design better systems so prep time is minimal—but still paid. Or simply start the actual shift a few minutes after paid time begins.

Sometimes it’s hard to imagine many advantages of being a union workplace, but here’s a bit of good news: At least in some limited circumstances, working under a collective-bargaining agreement gives employers some protection against FLSA lawsuits that demand payment for time spent putting on and taking off protective gear at the beginning and end of the workday.

Employees of T.J. Maxx stores in Texas have filed a class-action suit alleging that the retailer stiffed workers out of regular wages and overtime pay. The lawsuit claims management required workers who exceeded their scheduled hours to work off the clock and told them to use vacation and sick time to cover time worked beyond their scheduled hours.